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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.
Unlock more power from your 2014+ Subaru BRZ or Scion FR-S with GSC Power Division 23-8N Stainless Alloy Exhaust Valves. These +1mm oversized valves (30mm head) are designed for enthusiasts looking to improve exhaust gas scavenging and overall engine breathing. By increasing the exhaust valve size, you reduce backpressure and allow the engine to clear combustion gases more efficiently, which is essential for high-performance and forced-induction builds.
The 23-8N stainless alloy is specifically formulated to handle the high thermal stress encountered in the exhaust port, preventing deformation and ensuring a consistent seal. This is critical for maintaining engine health under boost or high-RPM operation. These valves are precision-ground to ensure optimal flow characteristics and are a perfect match for ported cylinder heads or high-lift camshaft setups. By upgrading your exhaust valves, you are taking a significant step toward maximizing the potential of your FA20 engine. When you need high-performance parts that deliver real-world results, look no further than the selection at GGCRACING.
| Brand | GSC Power Division |
|---|---|
| Manufacturer part number | 2133-8 |
| GGC SKU | GSC2133-8 |
| UPC / GTIN | GSC2133-8 |
Use the manufacturer part number when you compare with other listings or ask us to confirm a match.
| Box size | 10.9 × 5.2 × 2.6 in |
|---|---|
| Shipping weight | 1 lb |
Universal fit — check measurements. Compare the dimensions and specifications on this page with your application before you order.
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