GSC P-D Intake Valve Set +1mm (36mm) Set of 8 Subaru BRZ / Scion FR-S / Toyota 14-20 | 2134-8

Product Fitment: 

2014-2016 Scion FR-S

2014-2020 Subaru BRZ

2017-2020 Toyota 86

The GSC Power-Division +1 mm Intake Valve is designed for FA20-engine applications in the Subaru BRZ, Scion FR-S, and Toyota 86 platforms. With a head diameter increased to 36 mm and a precision-machined 5.5 mm stem, this valve enhances intake flow and supports high-rpm and high-boost applications.

Key Features:

• 36.00 mm head diameter for improved airflow and power potential

• Stem diameter 5.5 mm and overall length 104.90 mm for compatibility and precision fit

• Swirl-polished head face to smooth airflow over the valve surface

• Back-cut design to reduce weight and improve high-rpm response

• Made from modified 21-4N stainless for intake side durability and heat resistance

• Micro-polished stem finish to reduce friction and ensure consistent operation

• Optimized tip height and reworked keeper groove for accurate valve train geometry and simplified setup

• Built for serious builds: aggressive cam profiles, high boost, and track-intended engines

Why Choose This Valve?
If you’re preparing a FA20 engine for performance use — whether high-revving naturally aspirated or boosted — the stock intake valves can become a limiting factor. This oversized intake valve allows better breathing, improved durability under stress, and enables the rest of your valvetrain to perform at its best.