SPORTSMAN 800

STM Tuner Secondary Base Tool will sit on your bench and works great for removing and installing the helix and spring along with changing belt deflection.

This is the updated replacement part for part# 1001015. Made from forged 7075. Comes assembled complete with rollers and buttons.  Rollers and buttons are replaceable.  We also have a grunt (spider) tool that can be purchased separately...

NON-FIXED PIN Fastener kit comes with the following hardware: This kit is for Cam Arm that utilize bushings to pivot on the pin kits  Supplied per arm: 2   - 7 gram tungsten inserts  16 - 1 gram washers  4   -...

.075" thick spider shim  Fits  All STM ATV primary's with a Sleeved 2 way Bearing  All STM Primary's with a 1.875" diameter post    MH 3-3-20

PLEASE WATCH VIDEO BELOW IF YOU NEED HELP WITH OPTIONS!   STM Gen 2 billet tuner secondary is a 3 roller secondary that offers an extremely smooth up shift with a very quick back shift. This secondary is tune-able with many helix and spring...

POLARIS RAGE SINGLE STAGE BILLET PRIMARY  This clutch offers extremely smooth low engagement with improved torque. Big tires or low speed riding is no longer a problem with the STM Rage 3P.  Click here to order parts from a...

 Wildcat Wet Clutch Model STM Primary Replacement cover 

STM belt removal tool for Polaris STM Gen 1 and Gen 2 Tuner Secondary M8x1.25 Thread  Fits 2010-13 RZR 800, 2005-14 Sportsman 800  

ATV Primary Fixed Sheave Gen 2 comes with fixed sheave part# 2001040 and post part# 2001024

STM Gen 2 tuner secondary fixed sheave assembly comes with sheave part# 2001048, post part# 2001046, Rollers, Pins, Pin screws.    

Replacement movable sheave for the Polaris STM Gen 2 Tuner secondary. 1.181 Bushing ID  Fits  Polaris  2010-13 RZR 800 2005-12 Sportsman 800 2013-18 Ranger xp900 2015 Xp900 2016 ACE 900   MH3-16-20

STM Gen 2 tuner secondary fixed sheave assembly comes with sheave part# 2001216, post part# 2001046, Rollers, Pins, Pin screws.