Swift Rear Coil Spring - Tight Helix - 5.0" O.D. x 13" Tall - 200 lb. H777C05M The Pro Series mufflers work

The Pro Series mufflers work on all applications ranging from street trucks

throttle response and idle quality

1900 / 5600 RPM

Features:Designed exclusively for extreme duty racingProprietary rubber compound has a higher devulcanizing ratingComposition absorbs less infrared radiation

Swift Rear Coil Spring - Tight Helix - 5.0" O.D. x 13" Tall - 200 lb. H777C05M The Pro Series mufflers workINCREASE 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