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Manley Extreme Duty exhaust valve, sized with a 1.900 in head, 5.422 in overall length and a 0.3415 in stem, is engineered for extreme racing and marine conditions. The Extreme Duty Series supports Top Fuel, Funny Car and high-heat Big Block Chevy applications. Swirl-polished underheads and machined combustion faces enhance airflow while chrome stems and hard tips increase wear resistance for sustained performance.
Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem
