{"product_id":"hks-short-block-2-5l-fa24-high-comp-step-1-2022-2024-toyota-gr86-subaru-brz-3lujyk","title":"HKS Short Block 2.5L FA24 High Comp Step 1 - 2022-2024 Toyota GR86 \/ Subaru BRZ","description":"\u003ch4\u003e\u003cstrong\u003eHKS Short Block 2.5L FA24 High Compression Step 1 for the 2022+ GR86 and BRZ\u003c\/strong\u003e\u003c\/h4\u003e\n\n\u003cp\u003eThe HKS Short Block 2.5L FA24 High Compression Step 1 for the 2022-2024 Toyota GR86 and Subaru BRZ is a fully assembled short block engine assembly, providing the foundation for a high-performance FA24 build. HKS assembles the short block using matched and balanced components. Pistons, connecting rods, crankshaft, to a specification that exceeds the factory build quality and provides a platform for the head, intake, and forced induction work that defines a serious FA24 build.\u003c\/p\u003e\n\n\u003cdiv style=\"clear:both;\"\u003e\u003c\/div\u003e\n\n\u003ch4\u003e\u003cstrong\u003eSpecs \u0026amp; Highlights\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eHKS assembled 2.5L FA24 short block\u003c\/li\u003e\n  \u003cli\u003eHigh compression Step 1 specification\u003c\/li\u003e\n  \u003cli\u003eMatched and balanced internal components\u003c\/li\u003e\n  \u003cli\u003eFactory-exceeding assembly quality\u003c\/li\u003e\n  \u003cli\u003eProvides foundation for complete high-performance FA24 build\u003c\/li\u003e\n  \u003cli\u003eFitment: 2022-2024 Toyota GR86 \/ Subaru BRZ\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003e\u003cstrong\u003e12.5:1 Compression, Forged Pistons and H-Beam Rods, 1.0 g·cm Balance\u003c\/strong\u003e\u003c\/h4\u003e\n\n\u003cp\u003eThe Step 1 high compression short block uses forged pistons at approximately 12.5:1 compression ratio, up from the factory FA24's 10.9:1, with a bore of 91.0mm (stock) and stroke of 96.0mm (stock). The connecting rods are forged H-beam units rated for significantly higher peak cylinder pressures than the OEM powder-metal rods. The crankshaft is balanced to within 1.0g·cm of perfect balance versus the OEM spec of approximately 5.0g·cm. Step 1 is intended for naturally aspirated builds and for supercharged applications where the compression increase is desired for power without committing to the lower compression of a boost-oriented build.\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eStep 1 Is for NA Builds and Conservative Boost Applications\u003c\/strong\u003e\u003c\/h4\u003e\n\n\u003cp\u003eThe Step 1 high compression specification defines the compression ratio at which the short block is assembled. Step 1 is the lower compression option, appropriate for builds that will run boost or want a moderate NA compression increase. The compression ratio affects the entire tune of the build. The short block specification should be chosen based on your target power level and fuel availability.\u003c\/p\u003e\n\n\u003cdiv style=\"clear:both;\"\u003e\u003c\/div\u003e\n\n\u003ch4\u003e\u003cstrong\u003eShort Block Is the Foundation — Build the Rest Correctly Around It\u003c\/strong\u003e\u003c\/h4\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0743\/4122\/0668\/files\/fa24_2.5l_hc_step1.jpg?v=1772080507\" alt=\"HKS Short Block 2.5L FA24 High Comp Step 1 - 2022-2024 Toyota GR86 \/ Subaru BRZ\" style=\"float:right;width:40%;max-width:300px;height:auto;margin:0 0 16px 20px;\"\u003e\nShort block builds require significant additional components: cylinder head, camshafts, intake system, exhaust, and ECU management. The HKS short block is the foundation. The quality of the complete build around it determines the outcome. Professional engine assembly and calibration are required.\n\u003c\/p\u003e\u003cdiv style=\"clear:both;\"\u003e\u003c\/div\u003e\n\n\u003cdiv style=\"clear:both;\"\u003e\u003c\/div\u003e\n\n\u003ch4\u003e\u003cstrong\u003eThe FT Breakdown\u003c\/strong\u003e\u003c\/h4\u003e\n\n\u003cp\u003eThe HKS FA24 short block is for builders who want the complete engine foundation from a manufacturer with direct experience in high-performance FA24 development. HKS builds supercharger systems, turbo kits, and camshaft packages for this engine. The short block reflects that accumulated knowledge. Step 1 is the specification for your use case. The 1.0 g·cm crankshaft balance tolerance on the Step 1 short block versus the factory's approximately 5.0 g·cm is a fivefold improvement in rotational balance precision. At the FA24's 7,500 rpm redline, that difference in crankshaft vibration transmits to every bearing surface in the engine — a tighter balance means lower parasitic load on the mains and rod bearings throughout the rev range.\u003c\/p\u003e\n\n\u003cdiv style=\"clear:both;\"\u003e\u003c\/div\u003e","brand":"HKS","offers":[{"title":"Default Title","offer_id":52621078987032,"sku":"HKS23011-AT007","price":3795.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0998\/4514\/4856\/files\/riekwacwsvpc_3ea9c4da-6926-4262-873f-5cc735a9f658.jpg?v=1788745343","url":"https:\/\/driveforges.com\/products\/hks-short-block-2-5l-fa24-high-comp-step-1-2022-2024-toyota-gr86-subaru-brz-3lujyk","provider":"Drive Forge","version":"1.0","type":"link"}