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Manley Race Master intake and exhaust valves for 1990–1999 Mazda Miata 1.8L are built for racing engines operating under 8000 RPM. The Race Series valves are swirl‑polished under the head with fully machined combustion faces to optimize airflow. Stainless steel construction, chrome stems and hard tips increase wear resistance, and specific valve shapes are available to suit race necessities; exhaust valves are recommended for alcohol engines.
Manley 90-99 Mazda Miata 1.8L (BP056) DOHC 16 Intake 34mm Stainless Race Master Valves
