850 E-Tec

The spanner tool works with the STM torsional Spring Cover PN1001078    

¼" x  ¼" x 3.5" key .

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 1001471, PN 1001050 and PN 1001082.  FITS  STM Gen 1 and Gen 2 ATV/UTV...

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.

Bushing Retaining Clip.

Replacement reverse Buttons sold individual Fits  All STM Gen 2 Snowmobile Tuner secondary's for 2 stroke machines with reverse        MH3-13-20

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...

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 

Turner adjustment nut.

Replacement roller for the STM snowmobile Gen 1 roller covers, Arctic Cat roller covers and the Gen 1 ATV tuner secondary clutches. 

A new option for running the 2.52 pitch track and drivers on your REV XP PLATFORM or 2017 850's. Consists of four aluminum billet hubs and two PPD plastic drivers and all the hardware. The hub and sprocket assemblies slip over the stock shaft and can be...