Swift Bulletproof Coil-Over Spring - 3.5" ID x 16" - 160 lb. Intercom External Speakers This check valve disc also

This check valve disc also maintains added control at all engine speeds and loads

Containing a proprietary mixture of lubricants and corrosion inhibitors

0001" -- far tighter than other manufacturers

Shoulders Adjust from 25" to 72"

Swift Bulletproof Coil-Over Spring - 3.5" ID x 16" - 160 lb. Intercom External Speakers This check valve disc alsoINCREASE 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