Manley Valve - Exhaust, Valve-S/D 1.900,+.100 Shopify Collective and rebound adjustments

and rebound adjustments

or restoration projects

These Roto-Joints install with a gentle press fit and are retained by a spiral retaining ring

our kits have been rigorously tested on the Hot Rod Power Tour and Good Guys Hall of Fame Tour

high-durometer bushings add a solid

Manley Valve - Exhaust, Valve-S/D 1.900,+.100 Shopify Collective and rebound adjustmentsManley Severe Duty Valves deliver the ultimate in strength, reliability, and high performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH 428 for exhaust and NK 844 for intake), offering unmatched tensile strength compared to competitive alloys. In fatigue testing at 40,000 psi and 1400F, Manley exhaust valves endured 100 million cycles, while competitors failed after just