Swift Bulletproof Coil-Over Spring - 3.5" ID x 16" - 150 lb. Control Arm Caster Slug Comprised of multiple embossed layers

Comprised of multiple embossed layers of stainless steel and outer layers utilizing a Viton rubber coating

McLeod Aluminum Flywheels are CNC machined from 6061 T6 aluminum and come with a replaceable steel friction plate and 1045 steel hardened ring gear

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

"U" cross section

Swift Bulletproof Coil-Over Spring - 3.5" ID x 16" - 150 lb. Control Arm Caster Slug Comprised of multiple embossed layersINCREASE 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