Description
Manley packages these Race Master exhaust valves for Subaru WRX EJ205/STI EJ257 33mm around the measurements that matter during cylinder-head setup, rather than treating every valve size as a separate shopping path. The parent listing is distinguished by 33mm Head / Set of 8, which should be cross-checked against the rest of the engine combination.
For Subaru WRX EJ205/STI EJ257 33mm, valve diameter changes can alter seat work and chamber/shrouding relationships, while alternate overall lengths can change installed height and rocker geometry.
Key Product Details
- Application: Subaru WRX EJ205/STI EJ257 33mm
- Manley Series: Race Master
- Valve Position: Exhaust
- Title Specification: 33mm Head / Set of 8
- Product Family Detail: Race Series application focus
- Manufacturer Part Number: 11171-8
Package Quantity
Set of 8 valves. The selected configuration is supplied as a 8-piece valve package. This quantity applies to the selected Manley SKU family shown on this product page.
Selection & Fitment Notes
Confirm head diameter, overall length, stem diameter, keeper/groove style, seat compatibility, and installed-height requirements with your cylinder-head specification before ordering.
Professional engine assembly and measurement are recommended. Product specifications should be confirmed against the selected Manley part number and the requirements of the exact engine build.