MST Cold Air Intake Kit - 2013-2021 Scion FR-S / Subaru BRZ / Toyota GT86 2.0L

Enclosed Airbox Intake with Dyno-Proven Gains for the FA20

The MST GT8602 Cold Air Intake for the 2013-2021 Scion FR-S, Subaru BRZ, and Toyota GT86 uses an enclosed airbox design with an integrated cold air duct, a transparent top cover, and an enlarged silicone intake hose feeding a 152mm high-flow filter. MST's dyno testing shows gains of 18 to 24 hp on the FA20 naturally aspirated engine. That result comes from the complete intake system working together, not a filter swap, and it is one of the most significant bolt-on power gains available for the FA20 platform without touching the ECU.

Specs & Highlights

• Enclosed airbox design with integrated cold air duct
• Transparent airbox cover for visual filter inspection
• Enlarged silicone intake hose for increased flow
• 152mm high-flow air filter
• Dyno-proven gains: +18 to 24 hp on the FA20
• Sharper throttle response across the RPM range
• Aggressive, more audible intake induction sound
• Direct bolt-on fit, no modifications required
• Compatible with stock or tuned ECU
• Uses factory MAF sensor and hardware

18 to 24 HP on a Naturally Aspirated Platform

A dyno gain of 18 to 24 hp from an intake on a naturally aspirated engine is an exceptional result for this class of modification. The FA20 has been carefully optimized from the factory, which means the stock intake is already reasonably capable, and gains of this magnitude require a genuine system-level redesign rather than a filter upgrade. MST achieves it through the combination of the cold air duct, enclosed airbox, and enlarged silicone intake hose: the complete system reduces intake restriction across the full RPM range, which is where the numbers come from. No tune required to see the improvement.

Enclosed Airbox with Cold Air Duct

The enclosed airbox and integrated cold air duct separate the 152mm filter from engine bay heat while directing the coolest available underhood air into the intake path. On a naturally aspirated engine, intake air temperature directly affects air density and combustion efficiency. Cooler, denser air supports more complete combustion at the same throttle position. MST's sealed housing and dedicated duct ensure the filter is consistently pulling from the coldest available source rather than sharing air with heat-soaked engine bay air.

Enlarged Silicone Intake Hose

The enlarged silicone hose between the airbox and throttle body reduces restriction at one of the intake path's key bottlenecks. Silicone is flexible enough to absorb engine movement without cracking or stiffening over time, and MST's enlarged bore specification improves flow compared to the factory intake hose without creating fitment issues at the throttle body connection. It is the kind of detail that makes the difference between a kit that delivers the numbers and one that only gets close.

MST Performance Spotlight

MST Performance is a Taiwan-based manufacturer specializing in cold air intake systems for sport compact and performance vehicles. Their engineering approach centers on application-specific airbox designs that solve the problems the factory intake leaves behind: heat soak, restricted airflow, and limited filter access. Every MST kit is built around a fully enclosed airbox to keep intake temps consistent, a clear top cover so filter condition is visible without removing anything, and a high-flow 152mm filter that flows more than the stock unit without requiring oil or special maintenance. Hardware, mounting points, and MAF sensor compatibility are all carried over from the factory setup, making installation and removal clean and reversible.

Everything Included

• Enclosed airbox with integrated cold air duct
• Enlarged silicone intake hose
• 152mm high-flow air filter
• Transparent airbox cover
• All hardware and instructions

The FT Breakdown

The MST GT8602 is the intake to buy for the FA20 platform if real power gains are the goal. The 18 to 24 hp dyno result is backed by a complete system design doing its job: enclosed airbox, cold air duct, enlarged silicone hose, 152mm filter. Each element contributes and the result is the most effective bolt-on modification available for the Scion FR-S, BRZ, and GT86 that does not require a tune.