Swift Bump Spring - 3000 lb. 35690 13-3/16 x 12-5/8 in

13-3/16 x 12-5/8 in

These ball & socket style reducers have built-in O2 sensor bungs

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Swift Bump Spring - 3000 lb. 35690 13-3/16 x 12-5/8 inSwift 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