Swift Bulletproof Coil-Over Spring - 3.5" ID x 16" - 150 lb. Control Arm Caster Slug The center-mounted adjuster uses both

The center-mounted adjuster uses both left and right hand threads

Approved for use by Knoxville Raceway and the WoO (World of Outlaws)

"U" cross section

0L Mustang enthusiasts ONLY

Swift Bulletproof Coil-Over Spring - 3.5" ID x 16" - 150 lb. Control Arm Caster Slug The center-mounted adjuster uses bothINCREASE TRACTION, LESS UN SPRUNG MASS, MORE STROKE, INCREASED HANDLING. THE ONLY THING YOU WILL BE LOSING IS TRACK TIME. Swift Springs manufactures springs with differing rates for a variety of circle track racing applications. With options for both dirt and asphalt tracks, Swift has a wide range of coil spring formats, including coil over, dual rate, bump springs, and more. Swift Springs superior engineering has provided the next generation of