SPORTSMAN XP-850

ATV Movable Sheave Gen 2. Comes with bushing and bushing retainer installed.

Works only with HD style 1st stage cam arms.    Kit includes : 16 - 1 gram washers  3   - 7 gram tungsten washers  6   - M5 x 8mm BHCS 6   - M5 x 10mm BHCS 

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

 Wildcat Wet Clutch Model STM Primary Replacement cover 

The 24FDU558 bushing is a replacement bushing for some STM tuner secondary Dual Spring Caps sku: 1001676 applications. 

Tuner Retaining Washer for the STM tuner secondary 

Left hand spider nut for opposite rotation machines. .5" tall

POLARIS RAGE BILLET PRIMARY  MUST BE USED WITH THE STM TUNER DRIVEN FOR BEST RESULTS!  Click here to order parts from a clickable parts breakdown -#2001194! New improved two-way bearing design. The main shaft bearing is now smaller with...

Replacement sheave for the Can-Am STM tuner Gen 2 secondary. Includes bushing and bushing retaining clip installed.

POLARIS RAGE DUAL STAGE BILLET PRIMARY  MUST BE USED WITH THE STM TUNER DRIVEN FOR BEST RESULTS! CHECK OUT THE VIDEO BELOW. Click here to order parts from a clickable parts breakdown! New improved two-way bearing design. The main...

Polaris Tuner Secondary STM Gen 2 Fixed Sheave assembly comes with sheave part# 2001059 and post part# 2001060.

This is a left-hand thread spider made from 7075 billet aluminum. Comes assembled with rollers and buttons.  Rollers and buttons are replaceable. We also have a grunt tool that can be purchased separately part # 1001020.