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Manley Race Master exhaust valve for 1990–1999 Mazda Miata 1.8L (BP056) is a 28mm stainless steel race valve engineered for engines operating up to 8,000 RPM. Features include swirl-polished under-head areas, fully machined combustion faces, chrome stems and hard tips for durability, and suitability for alcohol engines as noted. Available in Race Master straight-stem shape.
Manley 90-99 Mazda Miata 1.8L (BP056) DOHC 16 Exhaust 28mm Stainless Race Master - Single Valve
