The stage 1 clutch kit will smooth engagement, increased bottom end response, increased track speed and this kit allows proper shift RPM while increasing backshift. Adjustable weights have a Tip and Heel adjustment to fine tune the shift characteristics and WOT RPM. Kits come with a setup sheet for starting point. Stage 2 kits now available!! The ultimate seat of the pants noticeable upgrade for your Boost!! All the same characteristics as stage 1 with; Endless track speed!! Excellent back shift!! Superior holding rpm!! Better Response! Stage 2 kits come with Secondary helix, secondary spring, Secondary slick shift washer, Primary spring, Primary weights, , Primary moly coated spring washer Weights will work with new billet spider.
