Swift Bump Spring - 2500 lb. Oil Cooler Allstar Mustang ll / GM

Allstar Mustang ll / GM Metric Spindle

2004-2008 Ford E-350 Super Duty

To top it off

computer modifications required

cross over tube

Swift Bump Spring - 2500 lb. Oil Cooler Allstar Mustang ll / GMSwift 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