Manley Valve - Exhaust, Valve-S/D 1.600,+.500 mustang These full Length Mustang subframe

These full Length Mustang subframe connectors are available in standard style or with seat brackets for additional strength

120" DOM tubing

Upgrade your 64-72 A-Body rear suspension with our complete rear suspension kit

This adjustment is made at the rear of the muffler with a wrench by either moving the valve in or out

0-inch diameter

Manley Valve - Exhaust, Valve-S/D 1.600,+.500 mustang These full Length Mustang subframeManley 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