STM Can-am ATV\UTV Rage 6RS Primary Clutch

New improved two-way bearing design.

The main shaft bearing is now smaller with a 47mm outside diameter allowing a lower initial takeoff ratio than our past design. Allows tighter belt deflection and smoother transmission shifting.

All-new unique design that will hold the belt on high horsepower applications. The concept of this design is to provide an improved amount of force to the belt approximately for the first ½ to ¾ of the belt's shift and then release the force, once the vehicle's momentum is established. This design solves the biggest problem that all racers face from years past-- belt slip and over-revving during hard acceleration. Problem solved, Hang on! The way it works: All cam arms engage at the same time providing over twice the amount of force to the belt. Once the movable sheave has shifted ½ to ¾ of its now adjustable shift the supplemental cam arms sign off due to centrifugal force that holds them suspended above the movable sheaves rollers. This allows the main cam arms to finish the shift and acquire the proper operating rpm. We can now change and control the total shift in two ways. First is by adding more mass to the supplemental arms and secondly by changing the supplemental roller diameters. Yes, it's that simple. By decreasing the roller diameter the supplemental arms let go of the shift earlier and by increasing the roller diameter the supplemental arms shift longer before release. During testing, we discovered that by increasing the roller diameter by .125" at one time, the initial over-revving during hard acceleration would drop 500 rpm with no change in engagement rpm. This option is so simple but yet effective by just a 10-minute roller change. Uses any cam arm available on the market utilizing our retrofit pin design. The first stage cam arms will be provided with the Rage (second stage cam arms sold separately). They will be capable of adding additional weight for adjusting that killer hole shot. A set of three different size rollers will be provided.

The cover is designed to use Polaris ATV springs which provides a wide variety of spring rates to choose from.

We offer the Rage 6 calibrated with a spring and set of our own adjustable SUPER TIP CAM ARMS.

Comes with a belt removal tool and bolt for installation.

Each clutch is assembled and set up to run the BRP OEM belt.

We have tested setups for your particular application. You bolt it on and GO!

Due to offset differences the rage primary has to be used with the 302batvd short post tuner driven and the long post with the stock primary.

Item numbers 1001070 Primary Clutch Holding Tool, 1001072 STM & Arctic Cat Spider Nut Socket Tool for 1995-2009 and either 1001020 STM Rage 3 & 6 Spider Tool, or 1001032 STM Rage 4 & 8 Spider Tool (depending on rage number) is required when removing or installing the spider. Works on all STM primary clutches. Sold separately.