►STM Rage Primary Clutch's

Rage 4 STD  Available for all OEM tapered crankshafts. Available in several diameters.   Also available in a screw-on or quick change spider.  Rigid reinforced design for higher horsepower applications. The Rage primary is...

STM clutch support brace designed to tie the primary and secondary together to prevent shaft flexing for improved performance and belt life.   

STM clutch support brace designed to tie the primary and secondary together to prevent shaft flexing for improved performance and belt life.  Quick change comes with required primary puller.

Rage 4 HD tied tower     For High horsepower race applications only recommended 500+ HP HD clutch features a "spread pin" design to increase belt grip.  Available for all OEM tapered crankshafts. Available in several diameters. 8...

The Rage 3 WSP-TRA primary clutch is the next generation in high performance CVT clutching.   A total redesign to be the go-to trail sled clutch. This clutch features a "Wide Spread Pin" or WSP style spider. It moves the weight circle to a larger...

Upgrade from the rod eye design to the new bracket design on the STM clutch support brace designed to tie the primary and secondary together to prevent shaft flexing for improved performance and belt life.    10.5" Center to Center Comes...

When ordering use this guide to help you pick options   No warranty on Nitro 1000 or Ski-Doo Triple motors as we do not recommend running these clutches on them.   Available for all OEM tapered crankshafts. Available in several diameters...

Rage 8 STD   Dual stage design 4 1st stage arms and 4 main cam arms   Available for all OEM tapered crankshafts. Available in several diameters. 8"-8.5" Also available in a screw-on or quick change spider.  Rigid reinforced...

The Rage 4 WSP-TRA clutch is the next gen of high performance CVT clutching.   It has been totally redesigned with big power, high revving 3 cyl motor in mind.  This clutch features a "Wide Spread Pin" or WSP style spider. It moves the...

Rage 3 Wide Spread Pin Primary Clutch  Completely redesigned STM Rage 3WSP  Primary clutch features a wider, thicker, more durable spider with our new composite spider roller bushings for long life and quiet operation. The new...

The Rage 4 WSP-TRA clutch is the next gen of high performance CVT clutching.   It has been totally redesigned with big power in mind.  Click here to order parts from a clickable parts breakdown -#4001176! This clutch features a "Wide Spread...