SKU: 2122-01
GSC Power-Division P-D Intake Valve – 35mm Head (STD), Single – Subaru/Scion BRZ/FR-S/86 FA20 21-4N Chrome Polished
The GSC Power-Division 2122-01 P-D Intake Valve is a high-performance single intake valve engineered for the Subaru BRZ, Scion FR-S, and Toyota 86 with the FA20 engine. Using advanced 3D design and flow simulation, GSC created a stronger, higher-flowing valve head with 35mm standard diameter. Chrome-polished 21-4N stainless steel construction minimizes distortion at the face for better sealing under extreme conditions and consistent performance throughout the valve’s life. Swirl-polished, back-cut, and micropolished stem design promotes superior airflow, reduced weight, and less drag. Fully nitrided for extended life, reduced carbon buildup, and improved cylinder pressure. Optimized tip length and keeper groove balance spring pressures for maximum performance with GSC valvetrain kits. The industry standard for sport compact performance valves.
Key Features
- 35mm Standard Head Diameter Optimized for stock bore FA20 applications
- 21-4N Chrome Polished Stainless High heat resistance with superior durability
- Swirl Polished & Back Cut Smoother airflow and reduced weight for higher RPM/boost
- Micropolished Stem Less oil retention, reduced drag, smoother valve motion
- Fully Nitrided Increased life, better seat seal, reduced carbon on backside
- Optimized Tip & Keeper Groove Proper geometry, balanced spring pressures, less shimming
- Compatible with OEM & GSC Keepers Works with stock or upgraded locks
Specifications
| Specification | Detail |
|---|---|
| Part Number | 2122-01 |
| Brand | GSC Power-Division |
| Valve Type | P-D Intake (Single Valve) |
| Head Diameter | 35mm (STD) |
| Material | Modified 21-4N Stainless Steel |
| Finish | Chrome Polished |
| Stem Design | Micropolished |
| Nitride | Full Nitride (including 45° face) |
| Application | FA20 Engine (BRZ/FR-S/86) |
| Warranty | GSC Limited Warranty |
Whats Included
- One GSC Power-Division P-D Intake Valve (2122-01)
Product Notes
- Sold individually order 8 for complete set (intake side)
- Designed for high-RPM, boosted, or aggressive cam profiles
- Less valve face distortion than competitors for better sealing
- Perfect match with GSC springs, retainers, and guides
Installation Notes
- Professional valve job recommended
- Use with new valve seals, keepers, and proper lash settings
- Inspect guides and seats during install
- Follow GSC valvetrain specs for optimal performance
This Part Fits
| Year Range | Make | Model | Engine | Notes |
|---|---|---|---|---|
| 2013-2016 | Scion | FR-S | 2.0L FA20 | All trims |
| 2013-2020 | Subaru | BRZ | 2.0L FA20 | Limited, Premium, Series editions |
| 2017+ | Toyota | 86 | 2.0L FA20 | Base, Special Edition |
Why Choose GSC Power-Division Valves?
- Advanced 3D flow design for highest flowing valve head
- Less face distortion for better sealing and longevity
- Industry-leading materials and treatments (nitriding, polishing)
- Optimized geometry for aggressive cams and boost
Frequently Asked Questions
- Q: How many valves do I need for a full engine?
A: 8 for intake side (this is intake valve only). Order matching exhaust valves separately. - Q: Will these work with stock keepers?
A: Yes, compatible with OEM or GSC upgraded keepers/locks. - Q: Are these good for boosted applications?
A: Yes, 21-4N material and nitriding make them excellent for high-boost turbo builds.
Shipping and Handling
- Method: UPS / FedEx Ground
- Availability: In stock ships same or next business day
- Packaging: Secure protective packaging
- Weight: Approx. 0.5 lbs (single valve)
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