Description
The Rage 3 WSP-TRA primary clutch is the next generation in high performance CVT clutching.
A total redesign to be the go-to trail sled clutch.
This clutch features a "Wide Spread Pin" or WSP style spider. It moves the weight circle to a larger diameter to offer more belt grip with lighter weights resulting is a clutch that will rev up faster, handle more power and have greater durability on the track or trail.
This three arm clutch is ideal for applications from a stock sled to about 350hp range. In trail form, we had lower belt temps and extended belt life on a 300hp tune. Our testing also found huge gains drag racing with our newly released "Hump Back Raised Notch" cam arms. However, we have designed the clutch to still be very versatile in the fact that you can still run all of the original STM cam arms and most aftermarket cam arms that utilize a 5/16" pin.
Testing on the Sidewinder/Thundercat platform has found that running an 8.5" diameter primary and 11.25" diameter STM Gen 1 secondary with the XS-811 belt offers the best performance and also allows for 17% overdrive thru the clutches so you can run a lower gear ratio and still achieve the same top speed-resulting is cooler temps and longer belt life in both racing and trail applications.
The clutch includes belt and spider shims, so you can change your belt to sheave clearance and cam arm to roller clearance independently. This clutch uses TRA (Ski-doo) style or PS (Polaris/Arctic Cat) style springs.
The larger clutch fits under the body panel without modification.
We can also set-up the clutch to use the stock belt and stock secondary.
Cam arms and springs are sold separately.
The drag racing tied bearing brace is also available for this primary, but can only be used with solid front motor mounts and the Gen 1 STM tuner secondary. Body panels will need to be modified to fit the brace.
This clutch will also work on the older Yamaha Nytro and Apex/RX1 sleds.
Click here to order parts from a clickable parts breakdown -#1001636!
RDR 8/11/21
