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GSC Power Division engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full GSC Power Division lineup with fast shipping and expert fitment support — order with confidence.
Improve the breathing of your 2014+ Subaru BRZ or Scion FR-S with GSC Power Division 21-4N Stainless Alloy Intake Valves. Featuring a +1mm oversized head (36mm), these valves are designed to increase the intake charge volume, allowing your engine to produce more power and better throttle response. Whether you are building a track-focused machine or a high-performance street car, these valves are an essential upgrade for any serious FA20 engine build.
The use of 21-4N stainless alloy provides the ideal balance of strength and heat resistance, ensuring these valves can handle the increased demands of a modified engine. The +1mm oversized design is optimized for improved airflow, which is particularly beneficial when paired with performance camshafts and ported cylinder heads. Each valve is precision-manufactured to ensure a perfect fitment and a tight seal, promoting consistent compression and reliable operation. By choosing GSC Power Division, you are investing in quality components that are engineered to push the boundaries of your vehicle's performance. Find the best valvetrain solutions for your build at GGCRACING.
| Brand | GSC Power Division |
|---|---|
| Manufacturer part number | 2134-8 |
| GGC SKU | GSC2134-8 |
| UPC / GTIN | GSC2134-8 |
Use the manufacturer part number when you compare with other listings or ask us to confirm a match.
| Box size | 11.2 × 5.4 × 2.4 in |
|---|---|
| Shipping weight | 1.1 lb |
Universal fit — check measurements. Compare the dimensions and specifications on this page with your application before you order.
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