STM

STM 3VL 8.5" billet primary clutch (for high HP application up to 500HP this clutch puts more power down than any stock clutch can. Also excellent belt durability with the XS811 belt that works with...

Product Description 2012-13 Arctic Cat Torsion spring cap option that is used with the STM billet helix's. Allows the use of the Arctic Cat torsion spring and has holes for spring load...

STM torsional Helix for STM torsion conversions

STM tuner helix (specify application, only for STM secondary)

STM tuner Secondary clutch (11.25") for High HP application. Much better belt durability much better performance both on trail and at race track. BOTH STM clutches are on all our Pro mods and Pro...

TD 2016 Team high performance clutch kit   Includes  STM team boss torsion conversion kit Green torsion spring Dalton 84 gram weights (specifiy 87g for drag racing application in the...