Allstar Performance Spring Pre-Loader - 3" - 14" Tall Spring 58 1973-1974 Buick Apollo

1973-1974 Buick Apollo

1972-1986 Pontiac Bonneville

Helmet Blower Wiring Harness

1984-1991 GMC S15 Jimmy

Allstar Performance Spring Pre-Loader - 3" - 14" Tall Spring 58 1973-1974 Buick ApolloPre 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