• Exhaust valve, 33mm head diameter (+1mm)
• Chrome polished stem for reduced friction
• Precision-machined for consistent sealing
• Sold individually

A 33mm Exhaust Valve Built for Consistent Sealing

GSC's exhaust valve is precision-machined to a 33mm head diameter in the +1mm size, giving you an exact-fit replacement or upgrade option for the EJ205/EJ207/EJ257 platform. The chrome-polished stem reduces friction as the valve moves through the guide, which matters for both long-term wear and consistent valve action at higher RPM. That polished finish isn't just cosmetic, it's a real functional detail that affects how the valve performs under sustained use. It's the kind of upgrade that quietly does its job without ever needing a second thought.

Sold Individually for Flexible Builds

This valve is sold individually rather than as a matched set, giving you the flexibility to replace just the valves that actually need attention rather than buying a full set unnecessarily. That's particularly useful when doing a partial head rebuild or replacing a single damaged valve. Confirm the exact quantity and head size you need for your specific build before ordering. That's real, functional engineering, not just a marketing claim.

Straight From Subispeed

A precision 33mm exhaust valve for 2002-2014 WRX / 2004-2015 STI — sold individually for flexible head rebuild planning.

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