2023

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...

SHCS style cover stop for the STM Pneumatic Primary Lock Up clutch  Includes part # 1816 bushing & vh131 snap ring.  

Can only be used with STM Polaris and Can-Am ATV Rage 3 primary with bearing part #1001000.

STM clutch support brace designed to tie the primary and secondary together to prevent shaft flexing for improved performance and belt life.  New primary and secondary retaining bolts are included   Can only be used with STM primary and...

.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

Can only be used with STM Can-Am Rage 6 & 8 primaries with part# 1001000.

Pneumatic Primary clutch puller for the STM Pneumatic Primary Lockup clutch for 2017 Yamaha Sidewinder, 2017 Arctic Cat Thunder Cat, all Skidoo, Can-Am X3 and RZR XP Turbo. PNEUMATIC CLUTCHES ONLY! M14*1.5 x 9 3/4"  

Spanner tool for the STM Pneumatic Primary clutch cover stop

Replaces part #2001226

ATV Primary Fixed Sheave Gen 2 contains fixed sheave part# 3001010 and post part# 3001007 assembled. Fits Rage 3, 6 and 8. Works with Rage 3P short post offset (not standard Rage 3P with stock offset) Does not work for standard Rage3S or Rage3P...

Replacement valve for the STM Pneumatic Primary LockUp clutch