Swift Bump Spring Cup - 2.3" OD Flat Wire Springs - 5/8" Hole 500020160 These coils feature lower resistance

These coils feature lower resistance windings to ensure the most voltage possible is brought into the coil with an optimized turns ratio for the best output

Ultimate For Powerglide Applications

Rochester Quadrajet

Pro-Billet Ready-to-Run Distributor

These limits are adjustable with MSDs plug-in modules

Swift Bump Spring Cup - 2.3" OD Flat Wire Springs - 5/8" Hole 500020160 These coils feature lower resistanceDesigned for use with 2. 5" O. D. flat wire bump springs. Sold individually. (NOTE: Image for Reference only) 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 superior engineering has provided the next generation of motorsports