2019

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...

Made from billet aluminum. Comes assembled with rollers and buttons. 

Includes: 1 pin 1/4"x 1.5"  2 set screws 5/16"x3/8"

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"  

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...

This a a complete adjustable cam arm weight set for the stock primary clutch on the Can-Am X3 and Defender primary clutches  They have the capability to add grams of weight to each arm for adjustment.  The design gives the option to addi a...

This compression tool will allow you to change weights in your clutch without removing it from the crank. Simply remove the belt and clutch bolt, screw in the thread rod with the plastic cup and tighten the nut to collapse the sheaves.  5/8-18...

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

Replacement valve for the STM Pneumatic Primary LockUp clutch