2018

ATV secondary HD clutch spring - lime green  2 1/2" load 198 lbs 1 1/4" load 322 lbs Requires HD spring cap part number 1001009.

Available in 50 and 60 gram base with the capability of adding 32 grams per arm for adjustment. This design allows the option of adding large quantity of weight to three different areas on both sides of the cam arm to create the shifting characteristics...

ATV secondary HD clutch spring - blue  2 1/2" load 233 lbs 1 1/4" load 337 lbs Requires HD spring cap part number 1001009.

Sold individually. Clutch requires 2 washers.

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

This is a Gen 2 style sleeved bearing. Only works with sheaves that have previously had this bearing.

PLEASE WATCH THE  VIDEO BELOW IF YOU NEED HELP WITH OPTIONS!   Finned style secondary will not fit under stock housing and modifications to the clutch housing would be required to use a stock housing that is suggested.  This is an...

 To take full advantage of an optimal set up we suggest using the STM driven along with the Rage3P.   This clutch offers extremely smooth low engagement with improved torque. Big tires or low speed riding is no...

Qty 1 .570 wide Replacement bushing for the STM Supertip cam arm . will require reaming after press  Fits  STM  Supertip Yamaha Y, YS, YX and YXE style cam arms that fit the stock 8mm pins.  (Ream after press .316 reamer is...

The 2408 bushing is a replacement bushing for some STM tuner secondary movable sheave applications. Use with clip VH175 (purchase separately) per application.

Bushing comes with VH131 retaining clip.

STM Tuner Secondary roller pin (pull dowel)  Sold individually