STM Tuner Driven Secondary Replacement Components

5/16" x 18 nyloc locknut. Sold individually.   Fits STM Gen 1 tuner Secondary, Roller cover post #1001057 and Button cover post #1001058

Steel Washers set of 3 for STM Billet Roller Covers 

STM Gen 2 helix with reverse notch    Fits   All STM Gen 2 Snowmobile Tuner secondary's for 2 stroke machines with reverse        MH3-13-20

STM Tuner Secondary bolt retaining washer  Fits    Arctic Cat Procross 800 2012-15 STM Tuner Secondary Gen 1 and Gen 2  Arctic Cat Procross 1100 2012-15 STM Tuner Secondary Gen 1 and Gen 2           MH3-4-20

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

Offset shims for Arctic Cat Snowmobile tuner. Set of 6 shims. This is also an updated part from the "Diamond Drive" tuner offset shim SKU: 40-20

Set of 2 screws 8-32 x 3/8" BHCS

The 24FDU13 bushing is a replacement bushing for some STM tuner secondary movable sheave applications. 

Sold as a set of 3, 5/16-18 x 3/4 BHCS Works for STM Gen 1 tuner secondaries with roller cover post (Part# 1001057), button cover post (Part# 1001058) Post Sold separately.

Snowmobile Tuner Driven Movable Sheave Includes Movable sheave Qty 1 PN 1001057 Roller post Qty3 OR PN 1001058 Button Post Qty 3 PN 1001063 5/16-18 x 3/4" BHCS Qty 3 PN 1001061 5/16 lock nut Qty 3 PN 2408 Bushing Qty 1 PN 8-32 x 3/8" BHCS Bushing...

STM HD compression spring helix cover to be used with the KSS style springs, works with HXATV , HXATVG2 and HXSM2S helix's.  ONLY works on secondary's with a 1.500" diameter post.    Comes complete with  Qty 1 - 2408 Bushing for 1...

Replacement Fixed Sheave for the STM Gen 1 tuner secondary Arctic Cat 2012-2015 Procross 1100