X3 (all models)

The all New Profile design, HB series cam arms offer ideal heel weight built right into the cam arms for optimal torque and belt pinch still incorporating our signature style of adjustability to offer the most tuning capabilities available. Each arm...

Primary clutch .125 spring shim spacer 

Adjustment nut thrust washer.

Turner adjustment nut.

Clutch holding tool for STM primary clutches. This tool designed to be put into a vice to be able to hold STM primary clutches for assembly and disassembly. 

Rage 4 Wide Captured Pin Primary Clutch  Completely redesigned STM Rage 4WCP  Primary clutch features a wider, thicker, more durable spider with our new composite spider roller bushings for long life. The new design utilizes a...

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 the pins-only for .570 wide cam arms...

Fastner kit comes with the following hardware:Supplied per arm: 2   - 7 gram tungsten inserts  16 - 1 gram washers  4   - O-rings  8  - M3 x 6 long screws  2  - set screws  Supplied per kit...

STM torsional tuner driven purple spring.  2 1⁄4" Load - 100 lbs 1 1⁄4" Load - 159 lbs

The all New Profile design, HB series cam arms offer ideal heel weight built right into the cam arms for optimal torque and belt pinch still incorporating our signature style of adjustability to offer the most tuning capabilities available. Incorporating...

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 non-fixed style cam arms Non-Fixed Pin only works with cam arms that have a bushing.  Updated from...

Rage 8 ATV primary cover screw set. Includes: 8 - ¼-20 x 3/4" BHCS