RANGER RZR 4 800

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.  Non-Fixed Pin only works with cam arms that have...

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...

Primary clutch .125 spring shim spacer 

Replacement bushings for the STM Supertip R-series weights and the P-series weights. These bushings get pressed in and reamed after installation. Reamers available as part # RMR in sizes .251, .248, .311, & .317. Purchase separately.

.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

Available in 45 gram base weight with the ability of adding 20 grams per arm for adjustment.  This design allows the option of adding weight to two different areas on one side of the cam arm to create the shifting characteristics you desire. ...

This bolt and nut only works for the style that originally had a bolt and nut in place for the 1st stage rollers.  Sold as 1 pin and nut per assembly. If you have the set screw and pin style please click here for part number 1001028

 Wildcat Wet Clutch Model STM Primary Replacement cover 

STM tuner bolt kit, this is a generic bolt kit that will include all fasteners for the STM Tuner Secondary's listed below.. PN 1001034 replaces PN 1001035, PN 1001036, PN 1001050 and PN 1001082.  FITS  STM Gen 1 and Gen 2 ATV/UTV Tuner...

ATV Movable Sheave Gen 2 comes with: 1 - 1001004 bushing 1-  VH225 retaining clip 3 - 1001028  primary 1st stage roller pin assembly

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

ATV Movable Sheave Gen 2 comes with: 1 - 1001004 bushing 1-  VH225 retaining clip 4 - 1001028  primary 1st stage roller pin assembly