2025

This is the updated replacement part for part# 1001015. Made from forged 7075. Comes assembled complete with rollers and buttons.  Rollers and buttons are replaceable.  We also have a grunt (spider) tool that can be purchased separately...

New improved two-way bearing design. The main shaft bearing is now smaller with a 47mm outside diameter allowing a lower initial takeoff ratio than our past design. Allows tighter belt deflection and smoother transmission shifting. Click here to order...

STM HD compression spring helix cover to be used with the KSS style springs, works with HXATV , HXATVG2 and HXSM2S helix's.  ONLY works on secondary's with a 1.500" diameter post.    Comes complete with  Qty 1 - 2408 Bushing for 1...

Replacement sheave for the Can-Am STM Tuner Secondary Gen 2. Includes bushing and bushing retaining clip installed.

.075" thick spider shim  Fits  All STM ATV primary's with a Sleeved 2 way Bearing  All STM Primary's with a 1.875" diameter post    MH 3-3-20

Replaces part #2001226

Replacement sheave for the STM Can-Am X3 secondary. Comes with bushing and bushing retaining clip installed  Updated part from original part# 3001049

The spanner tool works with the STM torsional Spring Cover PN1001078    

This can only be used with STM Polaris and Can-Am ATV Rage 3P primaries with bearing part# 1001000.

ATV Movable Sheave Gen 2 includes bushing and snap ring. Works only with Rage 3S and Rage 3P primary clutches.

These set screws are to adjust the tuck of the primary cam arms in the STM Rage primary clutches with the engagement set screw holes. Works for rage 3, dual stage rage 6, rage 4 and 8 arm clutches that have the cam arm tuck adjustment set...

Bolt sleeve for the STM Can-Am primary retaining bolts.