Swift Bump Spring - 1400 lb. BR30020 Mobil 1 Synthetic ATF has

Mobil 1 Synthetic ATF has the following builder approvals: Allison C4

Ford: Torino 68 - 73 7 L Engine

- Port Shape Round - Metallic Ceramic Coating

1971-1973 Ford M-400

*NOT COMPATIBLE WITH TREMEC TR6060 TRANSMISSIONS

Swift Bump Spring - 1400 lb. BR30020 Mobil 1 Synthetic ATF hasSwift 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