Manley Valve - Exhaust, Valve-BBC S/D 1.900 NA and do little to control

and do little to control axle wrap and wheelhop as they get older

We are especially proud to introduce our own ultra-premium springs built from CrSi wire and featuring 530 lb/in front and 130 lb/in linear rates

Built from CNC-machines Delrin

OE bushings are designed from soft rubber that deflects during normal and aggressive maneuvering

It also features 304 stainless steel

Manley Valve - Exhaust, Valve-BBC S/D 1.900 NA and do little to controlManley 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