Swift Coil-Over Spring - Barrel Type - 2.5" ID x 10" Tall - 275 lb. HYS11M61 The Circuit QRT includes integrated

The Circuit QRT includes integrated bolsters to protect the head

Does not alter factory wiring

These cylinder heads include your choice of 64cc (In order to retain stock compression ratio on 1970 and earlier small-blocks) or 70cc combustion chambers and high flow intake and exhaust ports

sport utility and performance street rod market

Leaf spring air spring kit with internal jounce bumper

Swift Coil-Over Spring - Barrel Type - 2.5" ID x 10" Tall - 275 lb. HYS11M61 The Circuit QRT includes integratedINCREASE 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