{"product_id":"fi-exhaust-mercedes-amg-g63-w465-ultra-edition-valvetronic-exhaust-system-made-to-order-us6x1n","title":"Fi Exhaust Mercedes-AMG G63 W465 Ultra Edition Valvetronic Exhaust System - Made to Order","description":"\u003cstyle\u003e\n  *,\n  *::before,\n  *::after {\n    box-sizing: border-box;\n    margin: 0;\n    padding: 0;\n  }\n\n  :root {\n    --kies-red: #c8102e;\n    --kies-red-dark: #9e0c23;\n    --kies-red-light: #f7e8ea;\n    --kies-black: #111111;\n    --kies-ink: #1c1c1c;\n    --kies-mid: #e0deda;\n    --kies-steel: #9a9590;\n    --kies-muted: #7a756f;\n    --kies-light: #f0ede8;\n    --kies-surface: #f8f6f3;\n    --kies-white: #ffffff;\n    --kies-success: #1f7a3f;\n    --kies-success-light: #e7f4ec;\n    --font-display-fi-exhaust: \"Barlow Condensed\", sans-serif;\n    --font-body-fi-exhaust: \"Barlow\", sans-serif;\n  }\n\n  .kies-g63-product {\n    max-width: 1400px;\n    margin: 0 auto;\n    padding: 32px 24px 80px;\n    \/* body *\/\n    background: var(--kies-white);\n    color: var(--kies-ink);\n    font-family: var(--font-body-fi-exhaust);\n    font-size: 16px;\n    line-height: 32px;\n    -webkit-font-smoothing: antialiased;\n  }\n\n  .kies-g63-product h2 {\n    text-align: left;\n  }\n\n  .kies-g63-breadcrumbs {\n    font-family: var(--font-display-fi-exhaust);\n    font-size: 12px;\n    font-weight: 600;\n    letter-spacing: 0.12em;\n    text-transform: uppercase;\n    color: var(--kies-muted);\n    margin-bottom: 32px;\n    display: flex;\n    flex-wrap: wrap;\n    gap: 8px;\n    align-items: center;\n  }\n  .kies-g63-breadcrumbs a {\n    color: var(--kies-muted);\n    text-decoration: none;\n    transition: color 0.2s;\n  }\n  .kies-g63-breadcrumbs a:hover {\n    color: var(--kies-red);\n  }\n  .kies-g63-breadcrumbs .kies-g63-breadcrumb-sep {\n    color: var(--kies-mid);\n  }\n  .kies-g63-breadcrumbs .kies-g63-breadcrumb-current {\n    color: var(--kies-ink);\n  }\n\n  .kies-g63-product-top {\n    max-width: 900px;\n    margin: 0 auto 80px;\n  }\n  .kies-g63-product-brand {\n    font-family: var(--font-display-fi-exhaust);\n    font-size: 13px;\n    font-weight: 700;\n    letter-spacing: 0.18em;\n    text-transform: uppercase;\n    color: var(--kies-red);\n    margin-bottom: 12px;\n  }\n  .kies-g63-made-to-order-tag {\n    display: inline-block;\n    font-family: var(--font-display-fi-exhaust);\n    font-size: 11px;\n    font-weight: 700;\n    letter-spacing: 0.16em;\n    text-transform: uppercase;\n    background: var(--kies-ink);\n    color: var(--kies-white);\n    padding: 6px 12px;\n    margin-bottom: 16px;\n  }\n  .kies-g63-product-title {\n    font-family: var(--font-display-fi-exhaust);\n    font-size: clamp(32px, 4vw, 52px) !important;\n    font-weight: 800;\n    line-height: 1.05;\n    letter-spacing: -0.01em;\n    text-transform: uppercase;\n    color: var(--kies-ink);\n    margin-bottom: 8px;\n  }\n  .kies-g63-product-subtitle {\n    font-family: var(--font-display-fi-exhaust);\n    font-size: 20px;\n    font-weight: 500;\n    letter-spacing: 0.04em;\n    color: var(--kies-muted);\n    text-transform: uppercase;\n    margin-bottom: 32px;\n  }\n\n  .kies-g63-spec-strip {\n    display: grid;\n    grid-template-columns: repeat(3, 1fr);\n    border-top: 1px solid var(--kies-mid);\n    border-bottom: 1px solid var(--kies-mid);\n    margin-bottom: 32px;\n  }\n  .kies-g63-spec-strip-item {\n    padding: 18px 4px;\n    border-right: 1px solid var(--kies-mid);\n  }\n  .kies-g63-spec-strip-item:last-child {\n    border-right: none;\n  }\n  .kies-g63-spec-strip-item:nth-child(n + 2) {\n    padding-left: 20px;\n  }\n  .kies-g63-spec-label {\n    font-family: var(--font-display-fi-exhaust);\n    font-size: 11px;\n    font-weight: 600;\n    letter-spacing: 0.14em;\n    text-transform: uppercase;\n    color: var(--kies-muted);\n    margin-bottom: 4px;\n  }\n  .kies-g63-spec-value {\n    font-family: var(--font-display-fi-exhaust);\n    font-size: 20px;\n    font-weight: 700;\n    color: var(--kies-ink);\n  }\n\n  .kies-g63-product-lede {\n    font-size: 17px !important;\n    line-height: 1.65;\n    color: var(--kies-ink);\n    margin-bottom: 28px;\n    font-weight: 400;\n  }\n  .kies-g63-product-lede strong {\n    font-weight: 700;\n  }\n\n  .kies-g63-feature-pills {\n    display: flex;\n    flex-wrap: wrap;\n    gap: 10px;\n    margin-bottom: 32px;\n    align-items: center;\n  }\n  .kies-g63-feature-pill {\n    font-family: var(--font-display-fi-exhaust);\n    font-size: 12px;\n    font-weight: 600;\n    letter-spacing: 0.12em;\n    text-transform: uppercase;\n    color: var(--kies-ink);\n    padding: 4px 0 4px 14px;\n    border-left: 2px solid var(--kies-mid);\n    background: transparent;\n    cursor: default;\n  }\n  .kies-g63-feature-pill.kies-g63-feature-pill-accent {\n    color: var(--kies-red);\n    border-left-color: var(--kies-red);\n    font-weight: 700;\n  }\n\n  .kies-g63-section {\n    margin-bottom: 72px;\n  }\n  .kies-g63-section-eyebrow {\n    font-family: var(--font-display-fi-exhaust);\n    font-size: 12px;\n    font-weight: 700;\n    letter-spacing: 0.18em;\n    text-transform: uppercase;\n    color: var(--kies-red);\n    margin-bottom: 12px;\n    display: flex;\n    align-items: center;\n    gap: 12px;\n  }\n  .kies-g63-section-eyebrow::before {\n    content: \"\";\n    display: inline-block;\n    width: 36px;\n    height: 2px;\n    background: var(--kies-red);\n  }\n  .kies-g63-section-title {\n    font-family: var(--font-display-fi-exhaust);\n    font-size: clamp(28px, 3.5vw, 40px) !important;\n    font-weight: 800 !important;\n    line-height: 1.1 !important;\n    letter-spacing: -0.01em !important;\n    text-transform: uppercase;\n    color: var(--kies-ink) !important;\n    margin-bottom: 24px !important;\n    max-width: 800px;\n    margin-inline: 0;\n    text-align: left;\n  }\n  .kies-g63-section-body {\n    font-size: 16px;\n    line-height: 1.7;\n    color: var(--kies-ink);\n    max-width: 820px;\n  }\n  .kies-g63-section-body p {\n    margin-bottom: 16px;\n    font-weight: 400;\n    font-size: 16px;\n  }\n  .kies-g63-section-body strong {\n    font-weight: 700;\n  }\n\n  .kies-g63-feature-grid {\n    display: grid;\n    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));\n    gap: 1px;\n    background: var(--kies-mid);\n    border: 1px solid var(--kies-mid);\n    margin-top: 32px;\n  }\n  .kies-g63-feature-card {\n    background: var(--kies-white);\n    padding: 28px 24px;\n    transition: background 0.2s;\n  }\n  .kies-g63-feature-card:hover {\n    background: var(--kies-surface);\n  }\n  .kies-g63-feature-card-num {\n    font-family: var(--font-display-fi-exhaust);\n    font-size: 11px;\n    font-weight: 700;\n    letter-spacing: 0.14em;\n    color: var(--kies-red);\n    margin-bottom: 12px;\n  }\n  .kies-g63-feature-card-title {\n    font-family: var(--font-display-fi-exhaust);\n    font-size: 20px;\n    font-weight: 700;\n    text-transform: uppercase;\n    color: var(--kies-ink);\n    margin-bottom: 8px;\n    line-height: 1.15;\n  }\n  .kies-g63-feature-card-desc {\n    font-size: 14px;\n    line-height: 1.55;\n    color: var(--kies-muted);\n  }\n\n  .kies-g63-tech-tabs {\n    display: flex;\n    flex-wrap: wrap;\n    border-bottom: 1px solid var(--kies-mid);\n    margin-bottom: 32px;\n  }\n  .kies-g63-tech-tab {\n    font-family: var(--font-display-fi-exhaust);\n    font-size: 13px;\n    font-weight: 700;\n    letter-spacing: 0.12em;\n    text-transform: uppercase;\n    background: transparent;\n    color: var(--kies-muted);\n    border: none;\n    border-bottom: 2px solid transparent;\n    padding: 14px 20px;\n    cursor: pointer;\n    transition: all 0.15s;\n    margin-bottom: -1px;\n  }\n  .kies-g63-tech-tab:hover {\n    color: var(--kies-ink);\n  }\n  .kies-g63-tech-tab.active {\n    color: var(--kies-ink);\n    border-bottom-color: var(--kies-red);\n  }\n  .kies-g63-tech-panel {\n    display: none;\n  }\n  .kies-g63-tech-panel.active {\n    display: block;\n    max-width: 820px;\n  }\n  .kies-g63-tech-panel h3 {\n    font-family: var(--font-display-fi-exhaust);\n    font-size: 26px;\n    font-weight: 700;\n    text-transform: uppercase;\n    color: var(--kies-ink);\n    margin-bottom: 14px;\n  }\n  .kies-g63-tech-panel p {\n    font-size: 15px;\n    line-height: 1.65;\n    color: var(--kies-ink);\n    margin-bottom: 12px;\n    font-weight: 400;\n  }\n\n  .kies-g63-spec-table {\n    width: 100%;\n    border-collapse: collapse;\n    margin-top: 24px;\n  }\n  .kies-g63-spec-table tr {\n    border-bottom: 1px solid var(--kies-mid);\n  }\n  .kies-g63-spec-table tr:first-child {\n    border-top: 1px solid var(--kies-mid);\n  }\n  .kies-g63-spec-table td {\n    padding: 16px 0;\n    font-size: 15px;\n    vertical-align: top;\n  }\n  .kies-g63-spec-table td:first-child {\n    font-family: var(--font-display-fi-exhaust);\n    font-size: 13px;\n    font-weight: 700;\n    letter-spacing: 0.1em;\n    text-transform: uppercase;\n    color: var(--kies-muted);\n    width: 240px;\n    padding-right: 24px;\n  }\n  .kies-g63-spec-table td:last-child {\n    color: var(--kies-ink);\n  }\n\n  .kies-g63-faq-list {\n    margin-top: 24px;\n    max-width: 900px;\n  }\n  .kies-g63-faq-item {\n    border-bottom: 1px solid var(--kies-mid);\n  }\n  .kies-g63-faq-item:first-child {\n    border-top: 1px solid var(--kies-mid);\n  }\n  .kies-g63-faq-question {\n    font-family: var(--font-display-fi-exhaust);\n    font-size: 19px;\n    font-weight: 700;\n    text-transform: uppercase;\n    color: var(--kies-ink);\n    padding: 22px 48px 22px 0;\n    cursor: pointer;\n    position: relative;\n    background: none;\n    border: none;\n    width: 100%;\n    text-align: left;\n    line-height: 1.25;\n  }\n  .kies-g63-faq-question::after {\n    content: \"+\";\n    position: absolute;\n    right: 0;\n    top: 50%;\n    transform: translateY(-50%);\n    font-size: 28px;\n    color: var(--kies-red);\n    font-weight: 400;\n  }\n  .kies-g63-faq-item.kies-g63-open .kies-g63-faq-question::after {\n    content: \"−\";\n  }\n  .kies-g63-faq-answer {\n    max-height: 0;\n    overflow: hidden;\n    transition:\n      max-height 0.3s ease,\n      padding 0.3s ease;\n    font-size: 15px;\n    line-height: 1.65;\n    color: var(--kies-ink);\n  }\n  .kies-g63-faq-item.kies-g63-open .kies-g63-faq-answer {\n    max-height: 500px;\n    padding: 0 0 24px;\n  }\n\n  \/* CONFIGURATOR *\/\n  .kies-g63-configurator {\n    background: var(--kies-surface);\n    border: 1px solid var(--kies-mid);\n    padding: 48px 40px;\n    margin-bottom: 72px;\n  }\n  .kies-g63-configurator-header {\n    border-bottom: 1px solid var(--kies-mid);\n    padding-bottom: 20px;\n    margin-bottom: 32px;\n  }\n  .kies-g63-configurator-header h2 {\n    font-family: var(--font-display-fi-exhaust);\n    font-size: 32px;\n    font-weight: 800;\n    text-transform: uppercase;\n    margin-bottom: 6px;\n    letter-spacing: -0.005em;\n  }\n  .kies-g63-configurator-header p {\n    font-size: 15px;\n    color: var(--kies-muted);\n    font-weight: 400;\n  }\n\n  .kies-g63-config-grid {\n    display: grid;\n    grid-template-columns: 1fr 1fr;\n    gap: 40px;\n  }\n  @media (max-width: 900px) {\n    .kies-g63-config-grid {\n      grid-template-columns: 1fr;\n    }\n  }\n\n  .kies-g63-config-section h3 {\n    font-family: var(--font-display-fi-exhaust);\n    font-size: 14px;\n    font-weight: 700;\n    letter-spacing: 0.14em;\n    text-transform: uppercase;\n    color: var(--kies-red);\n    margin-bottom: 18px;\n    padding-bottom: 8px;\n    border-bottom: 2px solid var(--kies-red);\n  }\n\n  .kies-g63-option-block {\n    margin-bottom: 24px;\n  }\n  .kies-g63-option-label {\n    font-family: var(--font-display-fi-exhaust);\n    font-size: 13px;\n    font-weight: 700;\n    letter-spacing: 0.1em;\n    text-transform: uppercase;\n    color: var(--kies-ink);\n    margin-bottom: 10px;\n    display: block;\n  }\n  .kies-g63-option-buttons {\n    display: flex;\n    flex-wrap: wrap;\n    gap: 6px;\n  }\n  .kies-g63-option-btn {\n    font-family: var(--font-display-fi-exhaust);\n    font-size: 13px;\n    font-weight: 600;\n    letter-spacing: 0.05em;\n    background: var(--kies-white);\n    color: var(--kies-ink);\n    border: 1px solid var(--kies-mid);\n    padding: 10px 16px;\n    cursor: pointer;\n    transition: all 0.15s;\n  }\n  .kies-g63-option-btn:hover {\n    border-color: var(--kies-ink);\n  }\n  .kies-g63-option-btn.active {\n    background: var(--kies-ink);\n    color: var(--kies-white);\n    border-color: var(--kies-ink);\n  }\n\n  .kies-g63-build-summary {\n    background: var(--kies-white);\n    border: 1px solid var(--kies-mid);\n    padding: 18px 22px;\n    margin-bottom: 24px;\n  }\n  .kies-g63-build-summary-title {\n    font-family: var(--font-display-fi-exhaust);\n    font-size: 12px;\n    font-weight: 700;\n    letter-spacing: 0.14em;\n    text-transform: uppercase;\n    color: var(--kies-muted);\n    margin-bottom: 10px;\n  }\n  .kies-g63-build-summary ul {\n    list-style: none;\n    padding: 0;\n    margin: 0;\n  }\n  .kies-g63-build-summary li {\n    display: flex;\n    justify-content: space-between;\n    padding: 6px 0;\n    font-size: 13px;\n    border-bottom: 1px solid var(--kies-light);\n    gap: 16px;\n  }\n  .kies-g63-build-summary li:last-child {\n    border-bottom: none;\n  }\n  .kies-g63-build-summary li .kies-g63-summary-label {\n    font-family: var(--font-display-fi-exhaust);\n    font-weight: 600;\n    letter-spacing: 0.06em;\n    text-transform: uppercase;\n    color: var(--kies-muted);\n    font-size: 11px;\n    flex-shrink: 0;\n  }\n  .kies-g63-build-summary li .kies-g63-summary-value {\n    color: var(--kies-ink);\n    font-weight: 600;\n    text-align: right;\n    font-size: 13px;\n  }\n\n  .kies-g63-form-row {\n    margin-bottom: 14px;\n  }\n  .kies-g63-form-row.kies-g63-two-col {\n    display: grid;\n    grid-template-columns: 1fr 1fr;\n    gap: 10px;\n  }\n  @media (max-width: 500px) {\n    .kies-g63-form-row.kies-g63-two-col {\n      grid-template-columns: 1fr;\n    }\n  }\n\n  .kies-g63-form-label {\n    font-family: var(--font-display-fi-exhaust);\n    font-size: 12px;\n    font-weight: 700;\n    letter-spacing: 0.1em;\n    text-transform: uppercase;\n    color: var(--kies-ink);\n    display: block;\n    margin-bottom: 5px;\n  }\n  .kies-g63-form-label .kies-g63-required {\n    color: var(--kies-red);\n  }\n  .kies-g63-form-label .kies-g63-hint {\n    color: var(--kies-muted);\n    font-weight: 500;\n    letter-spacing: 0;\n    text-transform: none;\n    font-size: 11px;\n  }\n  .kies-g63-form-input,\n  .kies-g63-form-textarea {\n    width: 100%;\n    font-family: var(--font-body-fi-exhaust);\n    font-size: 14px;\n    color: var(--kies-ink);\n    background: var(--kies-white);\n    border: 1px solid var(--kies-mid);\n    padding: 11px 13px;\n    transition: border-color 0.15s;\n  }\n  .kies-g63-form-input::placeholder,\n  .kies-g63-form-textarea::placeholder {\n    color: var(--kies-muted);\n  }\n  .kies-g63-form-input:focus,\n  .kies-g63-form-textarea:focus {\n    outline: none;\n    border-color: var(--kies-red);\n  }\n  .kies-g63-form-textarea {\n    resize: vertical;\n    min-height: 72px;\n  }\n\n  .kies-g63-submit-btn {\n    display: block;\n    width: 100%;\n    background: var(--kies-red);\n    color: var(--kies-white);\n    font-family: var(--font-display-fi-exhaust);\n    font-size: 16px;\n    font-weight: 700;\n    letter-spacing: 0.14em;\n    text-transform: uppercase;\n    padding: 18px;\n    border: none;\n    cursor: pointer;\n    transition: background 0.15s;\n    margin-top: 8px;\n  }\n  .kies-g63-submit-btn:hover {\n    background: var(--kies-red-dark);\n  }\n  .kies-g63-submit-btn:disabled {\n    background: var(--kies-steel);\n    cursor: not-allowed;\n  }\n  .kies-g63-submit-note {\n    font-size: 12px !important;\n    color: var(--kies-muted) !important;\n    text-align: center;\n    margin-top: 10px;\n    line-height: 1.4 !important;\n    font-weight: 400;\n  }\n\n  .kies-g63-success-message {\n    display: none;\n    background: var(--kies-success-light);\n    border: 1px solid var(--kies-success);\n    padding: 28px 26px;\n    margin-top: 20px;\n  }\n  .kies-g63-success-message.kies-g63-show {\n    display: block;\n  }\n  .kies-g63-success-message h4 {\n    font-family: var(--font-display-fi-exhaust);\n    font-size: 22px;\n    font-weight: 800;\n    text-transform: uppercase;\n    color: var(--kies-success);\n    margin-bottom: 8px;\n  }\n  .kies-g63-success-message p {\n    font-size: 14px;\n    color: var(--kies-ink);\n  }\n\n  .kies-g63-error-message {\n    display: none;\n    background: var(--kies-red-light);\n    border: 1px solid var(--kies-red);\n    padding: 14px 18px;\n    margin-top: 14px;\n    font-size: 13px;\n    color: var(--kies-red-dark);\n  }\n  .kies-g63-error-message.kies-g63-show {\n    display: block;\n  }\n\n  .kies-g63-pricing-note {\n    background: var(--kies-black);\n    color: var(--kies-white);\n    padding: 32px 36px;\n    margin-bottom: 32px;\n    border-left: 4px solid var(--kies-red);\n  }\n  .kies-g63-pricing-note .kies-g63-pricing-eyebrow {\n    font-family: var(--font-display-fi-exhaust);\n    font-size: 12px;\n    font-weight: 700;\n    letter-spacing: 0.18em;\n    text-transform: uppercase;\n    color: var(--kies-red);\n    margin-bottom: 10px;\n  }\n  .kies-g63-pricing-note h2 {\n    font-family: var(--font-display-fi-exhaust);\n    font-size: 26px;\n    font-weight: 800;\n    text-transform: uppercase;\n    margin-bottom: 10px;\n    line-height: 1.1;\n    text-align: left;\n  }\n  .kies-g63-pricing-note p {\n    font-size: 15px;\n    color: #d4d2ce;\n    line-height: 1.6;\n    font-weight: 400;\n  }\n\n  @media (max-width: 600px) {\n    .kies-g63-spec-strip {\n      grid-template-columns: 1fr;\n    }\n    .kies-g63-spec-strip-item {\n      border-right: none;\n      border-bottom: 1px solid var(--kies-mid);\n    }\n    .kies-g63-spec-strip-item:last-child {\n      border-bottom: none;\n    }\n    .kies-g63-spec-strip-item:nth-child(n + 2) {\n      padding-left: 4px;\n    }\n    .kies-g63-configurator {\n      padding: 28px 20px;\n    }\n    .kies-g63-pricing-note {\n      padding: 24px 24px;\n    }\n  }\n\u003c\/style\u003e\n\u003cmain class=\"kies-g63-product\"\u003e\n\u003csection class=\"kies-g63-product-top\"\u003e\n\u003cdiv class=\"kies-g63-product-brand\"\u003eFi exhaust\u003c\/div\u003e\n\u003cspan class=\"kies-g63-made-to-order-tag\"\u003eMade to Order · Custom Built\u003c\/span\u003e\n\u003ch1 class=\"kies-g63-product-title\"\u003eMercedes-AMG W465 G63\u003cbr\u003eUltra Edition Exhaust\u003c\/h1\u003e\n\u003cdiv class=\"kies-g63-product-subtitle\"\u003eValvetronic Catback · Ultra-High-Flow Downpipes\u003c\/div\u003e\n\u003cdiv class=\"kies-g63-spec-strip\"\u003e\n\u003cdiv class=\"kies-g63-spec-strip-item\"\u003e\n\u003cdiv class=\"kies-g63-spec-label\"\u003eMaterial\u003c\/div\u003e\n\u003cdiv class=\"kies-g63-spec-value\"\u003eT304 SST\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kies-g63-spec-strip-item\"\u003e\n\u003cdiv class=\"kies-g63-spec-label\"\u003eYear\u003c\/div\u003e\n\u003cdiv class=\"kies-g63-spec-value\"\u003e2024+\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kies-g63-spec-strip-item\"\u003e\n\u003cdiv class=\"kies-g63-spec-label\"\u003eEngine\u003c\/div\u003e\n\u003cdiv class=\"kies-g63-spec-value\"\u003e4.0T M177\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"kies-g63-product-lede\"\u003eThe pinnacle valvetronic exhaust for the new \u003cstrong\u003eW465 Mercedes-AMG G63\u003c\/strong\u003e. The Fi Exhaust Ultra Edition unlocks the full character of the twin-turbo 4.0T M177 V8 — quiet enough for the daily, savage enough for the canyon, and engineered to deliver an estimated \u003cstrong\u003e5–10% horsepower gain\u003c\/strong\u003e when paired with full catless downpipes.\u003c\/p\u003e\n\u003cdiv class=\"kies-g63-feature-pills\"\u003e\n\u003cspan class=\"kies-g63-feature-pill kies-g63-feature-pill-accent\"\u003eValvetronic Technology\u003c\/span\u003e \u003cspan class=\"kies-g63-feature-pill\"\u003eT304 Stainless\u003c\/span\u003e \u003cspan class=\"kies-g63-feature-pill\"\u003eOPF \/ Non-OPF\u003c\/span\u003e \u003cspan class=\"kies-g63-feature-pill\"\u003eOEM Sport Button\u003c\/span\u003e \u003cspan class=\"kies-g63-feature-pill\"\u003e+5–10% HP\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003cdiv class=\"kies-g63-pricing-note\"\u003e\n\u003cdiv class=\"kies-g63-pricing-eyebrow\"\u003eMade to Order\u003c\/div\u003e\n\u003ch2\u003e\u003cspan style=\"color: rgb(11, 186, 234);\"\u003eConfigured to your G63. Built when you order.\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003eEvery Fi Exhaust Ultra Edition is custom-fabricated to the configuration you select below — downpipe type, tip style, finish, coating, and OPF\/Non-OPF fitment. Because each system is built to spec, pricing varies by configuration. Submit your build below and a Kies Motorsports specialist will respond with exact pricing, lead time, and confirmation of fitment within one business day.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- ============================================================\n       CONFIGURATOR + FORM\n       Submissions go to info@kiesmotorsports.com via Formspree.\n       Replace YOUR_FORMSPREE_ID in the form action with your real ID.\n       ============================================================ --\u003e\n\u003csection class=\"kies-g63-configurator\" id=\"kies-g63-configurator\"\u003e\n\u003cdiv class=\"kies-g63-configurator-header\"\u003e\n\u003ch2\u003eBuild Your Exhaust\u003c\/h2\u003e\n\u003cp\u003eConfigure your Ultra Edition, then send us your build. No payment due now.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cform id=\"quoteForm\" action=\"https:\/\/formspree.io\/f\/xqejebvp\" method=\"POST\"\u003e\n\u003cinput type=\"hidden\" name=\"_subject\"\u003e \u003cinput type=\"hidden\" name=\"_replyto\" id=\"replyto\"\u003e \u003cinput type=\"hidden\" name=\"Product\"\u003e \u003cinput type=\"hidden\" name=\"Build - Catback\" id=\"hidden-catback\"\u003e \u003cinput type=\"hidden\" name=\"Build - Downpipe\" id=\"hidden-downpipe\"\u003e \u003cinput type=\"hidden\" name=\"Build - Tips\" id=\"hidden-tip\"\u003e \u003cinput type=\"hidden\" name=\"Build - Coating\" id=\"hidden-coating\"\u003e \u003cinput type=\"hidden\" name=\"Build - Control\" id=\"hidden-control\"\u003e \u003cinput type=\"hidden\" name=\"Build - OPF Config\" id=\"hidden-opf\"\u003e\n\u003cdiv class=\"kies-g63-config-grid\"\u003e\n\u003c!-- LEFT: BUILD OPTIONS --\u003e\n\u003cdiv class=\"kies-g63-config-section\"\u003e\n\u003ch3\u003eStep 1 · Configure Your Build\u003c\/h3\u003e\n\u003cdiv class=\"kies-g63-option-block\"\u003eCatback System\n\u003cdiv class=\"kies-g63-option-buttons\"\u003e\n\u003cbutton type=\"button\" class=\"kies-g63-option-btn active\"\u003e Valvetronic Catback \u003c\/button\u003e \u003cbutton type=\"button\" class=\"kies-g63-option-btn\"\u003e Catback + Mid-Pipe \u003c\/button\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kies-g63-option-block\"\u003eDownpipe\n\u003cdiv class=\"kies-g63-option-buttons\"\u003e\n\u003cbutton type=\"button\" class=\"kies-g63-option-btn active\"\u003e Catless Standard \u003c\/button\u003e \u003cbutton type=\"button\" class=\"kies-g63-option-btn\"\u003e Catless Sensor \u003c\/button\u003e \u003cbutton type=\"button\" class=\"kies-g63-option-btn\"\u003e Sport 200-Cell \u003c\/button\u003e \u003cbutton type=\"button\" class=\"kies-g63-option-btn\"\u003e OEM (Skip) \u003c\/button\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kies-g63-option-block\"\u003eTip Style\n\u003cdiv class=\"kies-g63-option-buttons\"\u003e\n\u003cbutton type=\"button\" class=\"kies-g63-option-btn active\"\u003e Triple Square · Silver \u003c\/button\u003e \u003cbutton type=\"button\" class=\"kies-g63-option-btn\"\u003e Triple Square · Matte Black \u003c\/button\u003e \u003cbutton type=\"button\" class=\"kies-g63-option-btn\"\u003e Quad · Silver \u003c\/button\u003e \u003cbutton type=\"button\" class=\"kies-g63-option-btn\"\u003e Quad · Matte Black \u003c\/button\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kies-g63-option-block\"\u003eCoating\n\u003cdiv class=\"kies-g63-option-buttons\"\u003e\n\u003cbutton type=\"button\" class=\"kies-g63-option-btn active\"\u003e None \u003c\/button\u003e \u003cbutton type=\"button\" class=\"kies-g63-option-btn\"\u003e Ceramic \u003c\/button\u003e \u003cbutton type=\"button\" class=\"kies-g63-option-btn\"\u003e Gold Ceramic \u003c\/button\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kies-g63-option-block\"\u003eValve Control\n\u003cdiv class=\"kies-g63-option-buttons\"\u003e\n\u003cbutton type=\"button\" class=\"kies-g63-option-btn active\"\u003e OEM Sport Button \u003c\/button\u003e \u003cbutton type=\"button\" class=\"kies-g63-option-btn\"\u003e + Fi Pro Remote \u003c\/button\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kies-g63-option-block\"\u003eOPF Configuration\n\u003cdiv class=\"kies-g63-option-buttons\"\u003e\n\u003cbutton type=\"button\" class=\"kies-g63-option-btn active\"\u003e Not Sure — Confirm For Me \u003c\/button\u003e \u003cbutton type=\"button\" class=\"kies-g63-option-btn\"\u003e OPF \u003c\/button\u003e \u003cbutton type=\"button\" class=\"kies-g63-option-btn\"\u003e Non-OPF \u003c\/button\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- RIGHT: REVIEW + CONTACT INFO --\u003e\n\u003cdiv class=\"kies-g63-config-section\"\u003e\n\u003ch3\u003eStep 2 · Review \u0026amp; Send\u003c\/h3\u003e\n\u003cdiv class=\"kies-g63-build-summary\"\u003e\n\u003cdiv class=\"kies-g63-build-summary-title\"\u003eYour Build\u003c\/div\u003e\n\u003cul id=\"buildSummary\"\u003e\n\u003cli\u003e\n\u003cspan class=\"kies-g63-summary-label\"\u003eCatback\u003c\/span\u003e\u003cspan class=\"kies-g63-summary-value\" id=\"sum-catback\"\u003eValvetronic Catback\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"kies-g63-summary-label\"\u003eDownpipe\u003c\/span\u003e\u003cspan class=\"kies-g63-summary-value\" id=\"sum-downpipe\"\u003eCatless Standard\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"kies-g63-summary-label\"\u003eTips\u003c\/span\u003e\u003cspan class=\"kies-g63-summary-value\" id=\"sum-tip\"\u003eTriple Square — Silver\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"kies-g63-summary-label\"\u003eCoating\u003c\/span\u003e\u003cspan class=\"kies-g63-summary-value\" id=\"sum-coating\"\u003eNone\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"kies-g63-summary-label\"\u003eControl\u003c\/span\u003e\u003cspan class=\"kies-g63-summary-value\" id=\"sum-control\"\u003eOEM Sport Button\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"kies-g63-summary-label\"\u003eOPF\u003c\/span\u003e\u003cspan class=\"kies-g63-summary-value\" id=\"sum-opf\"\u003eNot Sure — Help Me Confirm\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kies-g63-form-row kies-g63-two-col\"\u003e\n\u003cdiv\u003eFirst Name \u003cspan class=\"kies-g63-required\"\u003e*\u003c\/span\u003e \u003cinput type=\"text\" id=\"firstName\" name=\"First Name\" class=\"kies-g63-form-input\" required=\"\"\u003e\n\u003c\/div\u003e\n\u003cdiv\u003eLast Name \u003cspan class=\"kies-g63-required\"\u003e*\u003c\/span\u003e \u003cinput type=\"text\" id=\"lastName\" name=\"Last Name\" class=\"kies-g63-form-input\" required=\"\"\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kies-g63-form-row\"\u003eEmail \u003cspan class=\"kies-g63-required\"\u003e*\u003c\/span\u003e \u003cinput type=\"email\" id=\"email\" name=\"Email\" class=\"kies-g63-form-input\" required=\"\"\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kies-g63-form-row\"\u003ePhone \u003cinput type=\"tel\" id=\"phone\" name=\"Phone\" class=\"kies-g63-form-input\"\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kies-g63-form-row kies-g63-two-col\"\u003e\n\u003cdiv\u003eCity \u003cinput type=\"text\" id=\"city\" name=\"City\" class=\"kies-g63-form-input\"\u003e\n\u003c\/div\u003e\n\u003cdiv\u003eCountry \u003cspan class=\"kies-g63-required\"\u003e*\u003c\/span\u003e \u003cinput type=\"text\" id=\"country\" name=\"Country\" class=\"kies-g63-form-input\" required=\"\"\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kies-g63-form-row kies-g63-two-col\"\u003e\n\u003cdiv\u003eVehicle Year \u003cspan class=\"kies-g63-required\"\u003e*\u003c\/span\u003e \u003cinput type=\"text\" id=\"vehicleYear\" name=\"Vehicle Year\" class=\"kies-g63-form-input\" placeholder=\"e.g. 2025\" required=\"\"\u003e\n\u003c\/div\u003e\n\u003cdiv\u003eVIN \u003cspan class=\"kies-g63-hint\"\u003e(optional)\u003c\/span\u003e \u003cinput type=\"text\" id=\"vin\" name=\"VIN\" class=\"kies-g63-form-input\"\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kies-g63-form-row\"\u003eAdditional Notes \u003ctextarea id=\"notes\" name=\"Additional Notes\" class=\"kies-g63-form-textarea\" placeholder=\"Plans for tuning, install location, timing, questions, etc.\"\u003e\u003c\/textarea\u003e\n\u003c\/div\u003e\n\u003c!-- Honeypot for spam protection (hidden from users) --\u003e \u003cinput type=\"text\" name=\"_gotcha\" style=\"display: none;\"\u003e \u003cbutton type=\"submit\" class=\"kies-g63-submit-btn\" id=\"submitBtn\"\u003e Send Quote Request \u003c\/button\u003e\n\u003cp class=\"kies-g63-submit-note\"\u003eSubmissions go directly to info@kiesmotorsports.com. A specialist will respond within one business day with exact pricing and lead time.\u003c\/p\u003e\n\u003cdiv class=\"kies-g63-error-message\" id=\"errorMessage\"\u003eSomething went wrong. Please try again or email us directly at info@kiesmotorsports.com.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/form\u003e\n\u003cdiv class=\"kies-g63-success-message\" id=\"successMessage\"\u003e\n\u003ch4\u003e✓ Quote Request Received\u003c\/h4\u003e\n\u003cp\u003eThanks for your interest in the Fi Exhaust G63 Ultra Edition. A Kies Motorsports specialist will review your build configuration and respond to your email within one business day with exact pricing, lead time, and any questions about fitment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"kies-g63-section\"\u003e\n\u003cdiv class=\"kies-g63-section-eyebrow\"\u003eOverview\u003c\/div\u003e\n\u003ch2 class=\"kies-g63-section-title\"\u003eA roaring masterpiece of engineering for the new G63.\u003c\/h2\u003e\n\u003cdiv class=\"kies-g63-section-body\"\u003e\n\u003cp\u003eIf you're behind the wheel of a \u003cstrong\u003eW465 Mercedes-AMG G63\u003c\/strong\u003e, you already know you've got a beast. The question is whether you're done leaving horsepower, voice, and presence on the table. The \u003cstrong\u003eFi Exhaust Ultra Edition\u003c\/strong\u003e is the answer — a complete valvetronic exhaust system engineered to amplify what AMG built, without compromising the daily-driver manners that make this truck so livable.\u003c\/p\u003e\n\u003cp\u003eBuilt around \u003cstrong\u003eT304 stainless steel\u003c\/strong\u003e and precision-fabricated muffler internals, every component is designed to flow harder, weigh less, and last longer than what came off the line. \u003cstrong\u003eValvetronic technology\u003c\/strong\u003e handles the rest — closed valves route gases through the muffler for a low-profile cruise, kies-g63-open valves unleash the full V8 baritone the M177 was always capable of.\u003c\/p\u003e\n\u003cp\u003eWhen paired with the \u003cstrong\u003eultra-high-flow catless downpipes\u003c\/strong\u003e, expect a \u003cstrong\u003e5–10% horsepower gain\u003c\/strong\u003e on the 4.0T twin-turbo — and an even bigger jump once you stack ECU tuning on top.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"kies-g63-section\"\u003e\n\u003cdiv class=\"kies-g63-section-eyebrow\"\u003eWhy It Wins\u003c\/div\u003e\n\u003ch2 class=\"kies-g63-section-title\"\u003eFive reasons the Ultra Edition is the benchmark.\u003c\/h2\u003e\n\u003cdiv class=\"kies-g63-feature-grid\"\u003e\n\u003cdiv class=\"kies-g63-feature-card\"\u003e\n\u003cdiv class=\"kies-g63-feature-card-num\"\u003e01\u003c\/div\u003e\n\u003cdiv class=\"kies-g63-feature-card-title\"\u003ePerformance Boost\u003c\/div\u003e\n\u003cdiv class=\"kies-g63-feature-card-desc\"\u003eSignificant horsepower and torque gains across the rev range from reduced back pressure and optimized flow.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kies-g63-feature-card\"\u003e\n\u003cdiv class=\"kies-g63-feature-card-num\"\u003e02\u003c\/div\u003e\n\u003cdiv class=\"kies-g63-feature-card-title\"\u003eInnovative Design\u003c\/div\u003e\n\u003cdiv class=\"kies-g63-feature-card-desc\"\u003ePrecision-engineered piping geometry and chamber design maximize efficiency at every RPM.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kies-g63-feature-card\"\u003e\n\u003cdiv class=\"kies-g63-feature-card-num\"\u003e03\u003c\/div\u003e\n\u003cdiv class=\"kies-g63-feature-card-title\"\u003eQuality Materials\u003c\/div\u003e\n\u003cdiv class=\"kies-g63-feature-card-desc\"\u003ePremium T304 stainless steel construction promises long-term durability and corrosion resistance.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kies-g63-feature-card\"\u003e\n\u003cdiv class=\"kies-g63-feature-card-num\"\u003e04\u003c\/div\u003e\n\u003cdiv class=\"kies-g63-feature-card-title\"\u003eSound Excellence\u003c\/div\u003e\n\u003cdiv class=\"kies-g63-feature-card-desc\"\u003eCustom muffler internals blend aggressive race-mode bark with a refined street-mode cruise.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kies-g63-feature-card\"\u003e\n\u003cdiv class=\"kies-g63-feature-card-num\"\u003e05\u003c\/div\u003e\n\u003cdiv class=\"kies-g63-feature-card-title\"\u003eVersatile Style\u003c\/div\u003e\n\u003cdiv class=\"kies-g63-feature-card-desc\"\u003eTriple-square or quad tips, silver or matte black — each etched with the Fi Exhaust logo.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"kies-g63-section\"\u003e\n\u003cdiv class=\"kies-g63-section-eyebrow\"\u003eTechnology\u003c\/div\u003e\n\u003ch2 class=\"kies-g63-section-title\"\u003eEvery component, configurable.\u003c\/h2\u003e\n\u003cdiv class=\"kies-g63-tech-tabs\"\u003e\n\u003cbutton class=\"kies-g63-tech-tab active\"\u003e Valvetronic \u003c\/button\u003e \u003cbutton class=\"kies-g63-tech-tab\"\u003e Catless Standard \u003c\/button\u003e \u003cbutton class=\"kies-g63-tech-tab\"\u003e Catless Sensor \u003c\/button\u003e \u003cbutton class=\"kies-g63-tech-tab\"\u003e Sport 200-Cell \u003c\/button\u003e \u003cbutton class=\"kies-g63-tech-tab\"\u003e OEM Button \u003c\/button\u003e \u003cbutton class=\"kies-g63-tech-tab\"\u003eTips\u003c\/button\u003e \u003cbutton class=\"kies-g63-tech-tab\"\u003eCoatings\u003c\/button\u003e \u003cbutton class=\"kies-g63-tech-tab\"\u003eOPF \/ Non-OPF\u003c\/button\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kies-g63-tech-panel active\"\u003e\n\u003ch3\u003eValvetronic Technology\u003c\/h3\u003e\n\u003cp\u003eEvery Fi Exhaust system is built around valvetronic technology — not just for sound control, but to resolve the long-standing contradiction in exhaust design between high-RPM horsepower and low-RPM torque.\u003c\/p\u003e\n\u003cp\u003eClosed valves route gases through the muffler for back-pressure-friendly torque at low revs. Open valves give the M177 the high-flow, high-RPM breathing path it deserves.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kies-g63-tech-panel\"\u003e\n\u003ch3\u003eCatless Standard Downpipes\u003c\/h3\u003e\n\u003cp\u003eUltra-high-flow catless downpipes remove the restrictive factory catalytic converters, opening up exhaust gas flow and delivering the largest performance gains and the highest sound volume of any downpipe option.\u003c\/p\u003e\n\u003cp\u003eThis is the recommended path if you plan to go further with ECU tuning — it removes the single biggest restriction in the factory exhaust system.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kies-g63-tech-panel\"\u003e\n\u003ch3\u003eCatless Sensor Version\u003c\/h3\u003e\n\u003cp\u003eSame ultra-high-flow catless design as the standard version, but with an integrated dummy oxygen sensor housing to reduce the likelihood of triggering a check engine light (CEL).\u003c\/p\u003e\n\u003cp\u003eThe right choice for owners who want the performance and sound of a true catless setup without dealing with codes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kies-g63-tech-panel\"\u003e\n\u003ch3\u003eSport 200-Cell Downpipes\u003c\/h3\u003e\n\u003cp\u003eFor owners who want the gains of an aftermarket downpipe with the emissions profile of a catalyzed system, the Sport 200-Cell uses larger cells and metallic substrates for a smooth, durable, burn-out-resistant build.\u003c\/p\u003e\n\u003cp\u003eConverting the factory 400–800 CPSI converter to a 200-cell metallic significantly increases airflow while preserving torque-friendly back pressure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kies-g63-tech-panel\"\u003e\n\u003ch3\u003eOEM Sport Button Compatibility\u003c\/h3\u003e\n\u003cp\u003eFi Exhaust's intelligent valve module ties directly into the factory exhaust button and AMG drive modes — kies-g63-open and close the valves the way Mercedes intended, no extra controllers, no extra wiring in the cabin.\u003c\/p\u003e\n\u003cp\u003eFor owners who want more granular control, the Fi Pro remote is available as an optional upgrade.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kies-g63-tech-panel\"\u003e\n\u003ch3\u003eTip Styles\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eTriple Square (TIP-G63ue-S):\u003c\/strong\u003e The classic Ultra Edition signature — three square outlets per side, each etched with the Fi Exhaust logo. Available in standard silver or matte black.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQuad Tip (TIP-G63Aue-CRMB):\u003c\/strong\u003e A more aggressive quad-outlet layout for owners who want a different aesthetic. Same engraving, same finish options.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kies-g63-tech-panel\"\u003e\n\u003ch3\u003eCeramic \u0026amp; Gold Ceramic Coating\u003c\/h3\u003e\n\u003cp\u003eFi Exhaust ditches traditional thermal insulation wraps and instead applies a nano-ceramic coating directly to the exhaust. The result is lower heat radiated into the engine bay, longer life for adjacent components like wiring, and a finish that resists discoloration.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGold Ceramic\u003c\/strong\u003e adds a reflective metallic layer for even better thermal management on heat-sensitive setups.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kies-g63-tech-panel\"\u003e\n\u003ch3\u003eOPF \/ Non-OPF Fitments\u003c\/h3\u003e\n\u003cp\u003eOPF (Otto Particulate Filter, also known as GPF) is the particulate filter Mercedes adds to G63 models destined for markets with stricter emissions standards. Non-OPF models flow freer out of the box.\u003c\/p\u003e\n\u003cp\u003eFi Exhaust develops separate fitments for both versions so the system bolts up precisely no matter where your G63 was originally delivered.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"kies-g63-section\"\u003e\n\u003cdiv class=\"kies-g63-section-eyebrow\"\u003eSpecifications\u003c\/div\u003e\n\u003ch2 class=\"kies-g63-section-title\"\u003eThe details that matter.\u003c\/h2\u003e\n\u003ctable class=\"kies-g63-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eMercedes-AMG W465 G63 (2024+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEngine\u003c\/td\u003e\n\u003ctd\u003e4.0L Twin-Turbo V8 — M177\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eT304 Stainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Type\u003c\/td\u003e\n\u003ctd\u003eValvetronic Catback with optional downpipes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEstimated HP Gain\u003c\/td\u003e\n\u003ctd\u003e5–10% with full catless system\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eValve Control\u003c\/td\u003e\n\u003ctd\u003eOEM sport button \/ AMG drive modes; optional Fi Pro remote\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTip Options\u003c\/td\u003e\n\u003ctd\u003eTriple Square or Quad — Silver or Matte Black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDownpipe Options\u003c\/td\u003e\n\u003ctd\u003eCatless Standard · Catless Sensor · Sport 200-Cell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoating Options\u003c\/td\u003e\n\u003ctd\u003eNone · Ceramic · Gold Ceramic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEmissions Compatibility\u003c\/td\u003e\n\u003ctd\u003eOPF and Non-OPF fitments available\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eWorks with both Fi Exhaust and factory\/aftermarket downpipes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBuild Type\u003c\/td\u003e\n\u003ctd\u003eMade to order — fabricated to spec after quote acceptance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU Reference\u003c\/td\u003e\n\u003ctd\u003eMB-G63Aue-CBOE + TIP-G63Aue-S + CAB-MTM × 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/section\u003e\n\u003csection class=\"kies-g63-section\"\u003e\n\u003cdiv class=\"kies-g63-section-eyebrow\"\u003eFAQ\u003c\/div\u003e\n\u003ch2 class=\"kies-g63-section-title\"\u003eQuestions, answered.\u003c\/h2\u003e\n\u003cdiv class=\"kies-g63-faq-list\"\u003e\n\u003cdiv class=\"kies-g63-faq-item\"\u003e\n\u003cbutton class=\"kies-g63-faq-question\"\u003e Why is this product made to order? \u003c\/button\u003e\n\u003cdiv class=\"kies-g63-faq-answer\"\u003e\n\u003cp\u003eEach Fi Exhaust Ultra Edition is fabricated to the specific configuration you select — downpipe type, tip style, finish, coating, and OPF\/Non-OPF fitment. Because no two builds are identical and components are built on demand, pricing and lead time depend on configuration.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kies-g63-faq-item\"\u003e\n\u003cbutton class=\"kies-g63-faq-question\"\u003e What is the typical lead time? \u003c\/button\u003e\n\u003cdiv class=\"kies-g63-faq-answer\"\u003e\n\u003cp\u003eLead times generally run 4–8 weeks depending on configuration, coatings, and kies-g63-breadcrumb-current production schedule. Your Kies Motorsports specialist will confirm exact timing with your quote.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kies-g63-faq-item\"\u003e\n\u003cbutton class=\"kies-g63-faq-question\"\u003e What is Fi Valvetronic Exhaust Technology on the AMG G63? \u003c\/button\u003e\n\u003cdiv class=\"kies-g63-faq-answer\"\u003e\n\u003cp\u003eFi's Valvetronic Technology lets you toggle between loud and quiet exhaust notes using electronically actuated valves that adjust exhaust flow. It enhances both performance and sound, delivering an aggressive race-mode tone and a refined street-mode cruise on demand.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kies-g63-faq-item\"\u003e\n\u003cbutton class=\"kies-g63-faq-question\"\u003e What does the full Fi Exhaust setup for the W465 G63 include? \u003c\/button\u003e\n\u003cdiv class=\"kies-g63-faq-answer\"\u003e\n\u003cp\u003eThe complete setup includes a valvetronic catback, your choice of ultra-high-flow catless downpipes (standard or sensor version) or Sport 200-cell downpipes, triple-square or quad tips in silver or matte black, the optional Fi Pro remote, and optional ceramic or gold ceramic coating.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kies-g63-faq-item\"\u003e\n\u003cbutton class=\"kies-g63-faq-question\"\u003e How do I control the exhaust valves? \u003c\/button\u003e\n\u003cdiv class=\"kies-g63-faq-answer\"\u003e\n\u003cp\u003eThree ways: the factory exhaust button or AMG drive modes, the optional Fi Pro remote control, or a mobile app.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kies-g63-faq-item\"\u003e\n\u003cbutton class=\"kies-g63-faq-question\"\u003e What is the difference between OPF and Non-OPF models? \u003c\/button\u003e\n\u003cdiv class=\"kies-g63-faq-answer\"\u003e\n\u003cp\u003eOPF (Otto Particulate Filter) is the particulate filter Mercedes equips on G63s destined for stricter emissions markets. Non-OPF models lack this filter, allowing freer exhaust flow, slightly higher gains, and a more aggressive sound signature.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kies-g63-faq-item\"\u003e\n\u003cbutton class=\"kies-g63-faq-question\"\u003e Is the Ultra Edition compatible with aftermarket or factory downpipes? \u003c\/button\u003e\n\u003cdiv class=\"kies-g63-faq-answer\"\u003e\n\u003cp\u003eYes. The Ultra Edition catback is designed to work with Fi Exhaust downpipes, factory downpipes, and most major third-party downpipes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kies-g63-faq-item\"\u003e\n\u003cbutton class=\"kies-g63-faq-question\"\u003e What horsepower gain should I expect? \u003c\/button\u003e\n\u003cdiv class=\"kies-g63-faq-answer\"\u003e\n\u003cp\u003eWhen paired with a full catless system (valvetronic catback plus ultra-high-flow downpipes), expect an estimated 5–10% horsepower gain on the 4.0T M177 V8. Gains scale further when combined with ECU tuning.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/main\u003e","brand":"Fi Exhaust","offers":[{"title":"Default Title","offer_id":52624766173464,"sku":"FI-G63-Exhaust","price":16162.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0998\/4514\/4856\/files\/kies-motorsports-fi-exhaust-fi-exhaust-mercedes-amg-g63-w465-ultra-edition-valvetronic-exhaust-system-made-to-order-kies-motorsports-1241099712.webp?v=1788763007","url":"https:\/\/driveforges.com\/products\/fi-exhaust-mercedes-amg-g63-w465-ultra-edition-valvetronic-exhaust-system-made-to-order-us6x1n","provider":"Drive Forge","version":"1.0","type":"link"}