2021

STM Torsion spring cover option. Allows the use of a torsion spring with the option of 7 spring load adjustments with one spring. No drilling or modifications to the STM Secondary is needed. Does not come with helix or spring...

Set of 3 rollers.

Cylinder Mount for the STM Pneumatic Primary Lock Up clutch   

Replacement fixed sheave and post for 2021 Polaris Turbo S model only. Includes fixed sheave, post, rollers and buttons  

8 arm snowmobile screw-on spider. Comes complete with rollers, buttons and 1st stage arms. 

 STM Tuner Secondary Gen 2 Fixed sheave assembly Complete with sheave, post, rollers, pins, pin retaining screws.   Fits 2016-2023 Polaris RZR XP 1000 2016-2022 XP 900 Does not fit...

Plunger bearing spacer for all Pneumatic Lockup clutches.

Adjustment nut.

Screw-on HD spider shim .03 thick. Fits STM 30, 33 and 35mm primary clutch with 1.875" dia post   Old part number - 25-30-35-HD-SO-03

Works with all 1810 style bushings  All STM primary cover Primary cover bushing press tool, one side is used to press the bushings in with ease while flipping the tool over it is also used to press the bushing out if needed. A very handy tool that...

Replacement movable sheave for the 2001255 Primary  includes bushing & snap ring (Part # 1001004)

Primary bolt washer for STM clutch support brace for 1/2" and 14mm bolts