2017

ONLY WORKS IN STM CLUTCHES  **Updated part # from 28ACS312** Sold in a per arm set. 1 pin and bushing set per arm is needed. Works with fixed style cam arms that have set screws to fix the arm to...

ONLY WORKS IN STM CLUTCHES  **Updated part # from 27ACS312** Sold in a per arm set. 1 pin and bushing set per arm is needed. Works with non-fixed style cam arms only for .570 wide cam arms...

ONLY WORKS IN STM CLUTCHES  **Updated part # from 27ACS312** Sold in a per arm set. 1 pin and bushing set per arm is needed. Works with fixed style cam arms that have set screws to fix the arm to...

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

Made from forged 7075. Comes assembled complete with rollers and buttons.  Rollers and buttons are replaceable.  We also have a grunt tool that can be purchased separately part#1001020.

Made from billet aluminum. Comes assembled with rollers and buttons.  Spider Rebuild Kit: Click Here

These are designed for the STM Rage 3VL 2016-2017 RZR XP-Turbo primary clutch. They have the capability adding 32 grams per arm for adjustment.  This design allows the option of adding large...

POLARIS RAGE BILLET PRIMARY  With the XP900 we experienced 10MPH GAIN OVER THE STOCK CLUTCHES. MUST BE USED WITH THE STM TUNER DRIVEN FOR BEST RESULTS!  Click here to order parts from a clickable...

This is a replacement movable sheave for the single stage rage3-VL XP-Turbo STM primary's  Comes with 1 - Movable sheave 1- Bushing installed 1 - Bushing retaining clip installed 

Primary bearing cap for primary clutch part# 2001194.

Primary clutch .125 spring shim spacer 

ATV Primary Fixed Sheave comes with fixed sheave part# 2001107 and post part# 2001134 assembled