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Product Details
Replacement clutch springs for Bully style go kart racing clutches used in outlaw kart, junior sprint, quarter midget and micro sprint classes. Three rates let you set engagement RPM without changing lever weights or frictions.
Spring rate is the main lever you have over where the clutch hooks up, and springs take a set over time, so a pack that engaged perfectly in the spring will creep by mid-season. Our red and black springs match the rates other companies offer, so you can swap straight across. The orange spring is all new, designed for setups running no lever weights or for anyone chasing a very low engagement point.
- Red: .090 rate
- Black: .085 rate
- Orange: .070 rate, for low engagement or no-lever-weight setups
- Fits Bully style racing clutches
Please note: spring heights may need to be set higher to reach the same engagement RPM, especially with the black springs. Sold individually. Retainers, lever weights and clutch assembly are sold separately.