BBC S/F 1.725in Exhaust Valves

The Manley BBC S/F 1.725in Exhaust Valves are designed for high-performance big-block Chevy builds, where reliability and optimal flow are essential. These valves are suitable for street, strip, and racing applications, particularly in modified engines that require superior components to meet their demands.

Featuring a 1.725-inch head diameter, these exhaust valves are engineered for enhanced exhaust scavenging and thermal management. They are precision-ground to ensure a perfect fit in properly prepared BBC cylinder heads, which minimizes blow-by and maximizes combustion efficiency across the RPM range.

Engine builders and performance shops trust Manley exhaust valves for assembling competition engines, stroker packages, or restorations where stock components may fall short. These valves are an excellent choice for anyone looking to enhance the performance of their big-block Chevy engine.