Seller notes

Go Race Parts presents... Our special on Supertech Performance Valves & Components! This listing is for a complete set of 16 Supertech STD size valves fits Subaru WRX STi EJ20/EJ25 applications This listing includes Supertech part numbers: SIVN-1010 x 8 (intake) SEVN-1010 x 8 (exhaust) Head Diameter: 36.0mm (intake) 32.0mm (exhaust) Stem Diameter: 5.96mm (intake) 5.96mm (exhaust) Valve Length: 104.35mm (intake) 104.7mm (exhaust) Material: Black Nitrided BLACK NITRIDE: This is a hardening treatme...

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