Allstar Performance Spring Pre-Loader - 3" - 10" Tall Spring 351012 1967-1974 Pontiac Firebird

1967-1974 Pontiac Firebird

The Dirt Late Model cover has zippers to access the engine and driver compartment

Kit includes four studs with nylon locking half nuts that thread into steering and pitman arms with 1/2"-20 threads for properly mounting steering links

has specialized in fabricated specialty vehicle components for many years

Nylon cover features an elastic band to fit tightly around starter body and a terminal window with openings for solenoid connections

Allstar Performance Spring Pre-Loader - 3" - 10" Tall Spring 351012 1967-1974 Pontiac FirebirdPre loader allows use of a softer spring rate that is pre loaded at ride height. The pre loaded spring will have less rate increase as the suspension travels. For example, a 150 lb. in. spring can be preloaded to 400 lbs. at ride height, but still only increases at a rate of 150 lb. in. as suspension travels. The entire unit may also be exchanged with another unit with a different rate spring pre installed to allow spring rate changes without