Swift Bump Spring - 3000 lb. Exhaust Valve Black UnderHood Thermal Acoustic LinerSince

Black UnderHood Thermal Acoustic LinerSince 1995

one of the shoulder belts will elongate at different rate which forces the pelvis down into the seat cushion

Good street/strip camshaft with very wide range

Machine Washable

Swift Bump Spring - 3000 lb. Exhaust Valve Black UnderHood Thermal Acoustic LinerSinceSwift 2" O. D. bump springs offer the highest measurable shock stroke in the industry and, unlike inefficient rubber and foam bump stops, they are resistant to fatigue and heat. 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