This kit works similar to our torsional conversion kit by allowing the clutches to shift into a 10-12% overdrive for 5-7 more mph of top speed! The team springs will compress shorter to allow the extra overdrive. This kit comes with a slick shift bearing for smoother upshifts and quicker backshifts. The threaded insert allows you to adjust spring tension externally with the Black Diamond Extreme three finger adjuster tool.

This kit is also available without spring or helix.