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SKU: 2133-8
GSC P-D 2014+ BRZ/FRS FA20 Exhaust Valve Set +1mm (30mm) 23-8N Stainless Alloy
Upgrade your Subaru BRZ, Scion FR-S or Toyota 86 FA20 engine with GSC Power-Division's +1mm exhaust valve set. These 30mm one-piece forged valves fit 2013+ models and deliver enhanced exhaust flow for higher power output in boosted or high-RPM builds. Precision-engineered for direct replacement during valve jobs, they handle extreme conditions with reliable strength.
Key Features
- 23-8N Stainless Alloy Construction: Forged one-piece design resists heat and fatigue for long-term performance in turbocharged FA20 engines
- +1mm Oversize (30mm Diameter): Increases exhaust flow over stock 29mm valves to support bigger cams, porting and forced induction setups
- Swirl Polished Finish: Reduces friction and improves airflow for quicker valve response and measurable horsepower gains
- Exact FA20 Specs: 6mm stem, 104.14mm length, 1.25mm margin and 5mm lock groove ensure drop-in fit with OEM or aftermarket guides
- Made in USA Set of 8: Complete exhaust valve kit covers both cylinder heads with consistent quality
Product Notes
- Requires valve seat machining for +1mm oversize installation
- Pair with GSC valve springs for optimal control at high RPM
- Securely packaged to prevent damage during transit
Installation Notes
- Professional installation recommended.
- Valve job needed: cut seats to 30mm and check stem clearance
- Compatible with OEM retainers, locks and GSC springs/seats
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2013-2016 | Scion | FR-S | Base, Premium, Limited |
| 2013-2021 | Subaru | BRZ | Base, Premium, Limited, tS |
| 2017-2020 | Toyota | 86 | Base, GT, Hakone Edition |
Why Choose GSC Power-Division?
- Proven in drag racing and track abuse on FA20 engines
- High-strength materials built for 1000+hp applications
- Engineered tolerances match factory specs while enabling mods
Frequently Asked Questions
-
Q: Will this fit 2013 BRZ/FR-S models?
A: Yes, GSC 2133-8 fits all 2013+ FA20DIT engines in BRZ, FR-S and 86 including early models with no modifications -
Q: What makes 23-8N stainless better than stock?
A: 23-8N alloy offers superior heat resistance and tensile strength over OEM Inconel, preventing stem stretch or recession under boost -
Q: What is the warranty on these valves?
A: Lifetime warranty against manufacturing defects when installed by certified shops. excludes abuse or improper machining
Shipping & Handling
- Method: Standard Ground
- Availability: In stock - ships same or next business day
- Packaging: Compact box measures 6in x 4in x 2in
- Weight: 1.00 lbs
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