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I was informed by STM the red version roller assembly was a prototype only. Mine is all natural aluminum color. They said if I wanted a red one (which I did), that I could take it to get powdercoated or spray paint it, but STM would not sell them that way because the color was not durable in...

I recieved my 11.25" Arctic Cat version a few days ago. The quality is outstanding! :Rockon: This will be going on my desert car similar to K-fab's setup (RX-1 engine). :flag:

Got it. :jump:

Are you sure? The largest I saw quoted was 11.250". The plastic rollers are made from Torlon, which is a much stronger, wear-resistant material than what came stock on the Arctic Cat clutches. :pics:

May I make a few corrections to your numbers? :tg: The gear reduction in the RX-1 is 1.1935:1, so that means 10,500 engine RPM would be 8,798 drive clutch RPM. My vehicle is also geared using the same 8:1 gearbox as K-Fab. My rear tire diameter is 31". Using the online gear...

:hide: Well, it appears like we have several things working against us when trying to use the sled clutching in our machines. Either the engagement RPM is too high, the max RPM is too low, or the shift speed is too slow (shallow helix) for use in a desert car. The asphalt draggers seem...

I got several on ebay for about $10 ea. Refills are $5. ;)!

My dealer in AZ showed me a letter from Carlisle about the Ultimax XS belt. Carlisle is replacing ALL XS belts (new or used--doesn't matter) and they will send you back TWO of the Ultimax 3 belts to cover the additional cost.