Stock Primary Upgrade and Billet Components

These are designed for the STM Rage 3VL 2016-2017 RZR XP-Turbo primary clutch. They have the capability 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...

This is a 3 arm set of cam arms designed for the factory 2016-18 RZR XP-Turbo primary clutch. Replacement bushings STM Part # 2001119. New improved profile that provides a harder up shift than the Original Supertips. We are very pleased with testing...

These are designed for the wide roller team primary in the Arctic Cat Snowmobiles.  New improved profile that provides a harder up shift than the Original Supertips. We are very pleased with testing results on the race track and chassis Dyno this...

These are designed for the wide roller team primary in the Arctic Cat snowmobiles. New improved profile that provides a harder up shift than the Original Supertips. We are very pleased with testing results on the race track and chassis Dyno this past...

Step shim for the 2010-2015 stock Arctic Cat Primary Clutch .060 belt shim .090 spider shim.

This is a .030 spider shim for the 2010-2014 stock Arctic Cat Primary Clutch.

This is a .090 spider shim for the 2010-2014 stock Arctic Cat Primary Clutch.

This is a .030 belt shim for the 2010-2015 stock Arctic Cat Primary Clutch.

This is a .060 spider shim for the 2010-2014 stock Arctic Cat Primary Clutch.

STM replacement spider nut for stock Arctic Cat 2010-15 models. Uses STM tool part number  4001045 or 1 7/16" socket.   1 1/4" - 12 

This spacer is needed when using the STM 3 arm TRA cover on stock Arctic Cat Primary.

Our billet cover is a rigid design made from 6061 aircraft aluminum. This design captures the towers of the movable sheave. Our billet cover also allows the use of the Ski-Doo TRA springs which offers a wider variety of spring rates to choose...