Other roll bars on the market mount to either the balsa wood composite floor or the thin sheet metal above the gas tanks
Drag ''R'' Series and non-adjustable shocks for 63-87 Chevy C-10 Pickups
or precise cornering performance
These direct replacements for factory arms reduce wheel hop
FX4 and Platinum edition - New Electronics Installed
Manley Valve - Exhaust, Valve-S/D 1.625,+.700 1987-pontiac-firebird-esi3246161 Other roll bars on theManley 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