Manley Valve - Exhaust, Valve-S/D 1.625,+.700 1987-pontiac-firebird-esi3246161 The Koni shocks feature race-inspired

The Koni shocks feature race-inspired digressive valving and come with a Koni Lifetime Warranty

billet aluminum vertical links (VL765) are CNC-machined from 6061-T6 billet aluminum

our 90-04 Mustang Bumper Support offer a strong yet lightweight alternative to the hefty factory supports

Drag ''R'' Series and non-adjustable shocks for 63-87 Chevy C-10 Pickups

Dodge/Jeep 4549636

Manley Valve - Exhaust, Valve-S/D 1.625,+.700 1987-pontiac-firebird-esi3246161 The Koni shocks feature race-inspiredManley 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