2018

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.    ...

Adjustment nut thrust washer.

Tuner Belt Deflection shim Set Of 6. For 1.181" dia post Fits All Can Am ATV/UTV STM Tuners Gen 1 and Gen 2. WILL NOT WORK ON X3 or Defender  Polaris ATV Gen 2 Tuners  2015 XP900, 2016 Ace 900, 2015-18 Ranger XP900     MH 3-16-20

Bushing Retaining Clip.

Replacement button for the STM Gen 1 ATV tuner secondary and the STM Gen 2 snowmobile tuner secondary. This button replaces the roller.  Sold individually.

STM Torsional Spring cover    Fits    All STM Gen 2 snowmobile tuner secondary's that use a torsion spring    All STM Gen 1 ATV Tuner secondary's that use the outer belt deflection 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

Screw-on spider shim .06 thick. Fits 30 and 35mm taper.

.030" thick belt shim for stm primary clutches with a 1.875" dia post. Sold individually            MH 3-3-20

Nylon spacer goes between the spring and helix cap to prevent wear. Use with KSS style springs and HD compression spring helix cover #1001067 and Cf-Moto secondary clutches 

Set of 4 rollers.

Set of 4 rollers.