Subaru WRX Exhaust Valve (1) - GSC Power Division - +1mm 23-8N - Chrome Polished. A precision-built oversize exhaust valve for FA20F-equipped 2015+ WRX models, sold individually with a 30 mm head for targeted performance builds.

Crafted from durable 23-8N stainless steel and chrome polished for smooth operation, this GSC Power Division valve offers reliable heat resistance and consistent sealing. The +1 mm head size increases flow potential when paired with proper seat work, making it a smart choice for rebuilds or upgrades where durability and precision matter. Professional installation is recommended; oversize valves typically require valve seat machining for correct fit and performance.

Features

• 30 mm head (+1 mm over stock) for increased flow potential
• 23-8N stainless steel for strength and heat resistance
• Chrome-polished finish for smoother motion and wear control
• Engineered for 2015+ Subaru WRX FA20F cylinder heads
• Sold individually (quantity 1 valve)

Have questions or need fitment guidance? Call our Austin, TX shop at 512-982-9393 or our Los Angeles, CA area shop at 562-981-6800. We offer installation and customization services at both locations.

Buying multiple items? Contact us for possible shipping discounts.

We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov