Swift Bump Spring - 1400 lb. BR30020 11/32" valve stem diameterThe COMP

11/32" valve stem diameterThe COMP Cams philosophy has never changed: make the highest performing products possible and lead the industry in technological development

1971-1973 Ford M-400

*NOT COMPATIBLE WITH TREMEC TR6060 TRANSMISSIONS

OL 279T H-107 T THUMPR

Swift Bump Spring - 1400 lb. BR30020 11/32" valve stem diameterThe COMPSwift 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