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The Manley Race Master exhaust valves for 1990–1999 Mazda Miata 1.8L (BP056) are 28mm stainless valves built for high-RPM racing use. Manley’s Race Series is engineered for bracket, drag and oval track engines running up to 8000 RPM; these valves feature swirl-polished under-head areas, fully machined combustion faces, stainless construction and chrome stems with hard tips, and are recommended for alcohol exhaust use.
Manley 90-99 Mazda Miata 1.8L (BP056) DOHC 16 Exhaust 28mm Stainless Race Master Valves
