So far the Ultimax Pro belt has held up great, we race vintage snowmobiles and would blow the factory belts. Then I found out about Carlisle Ultimax Pro Belts and we used it for a race, we blew out our secondary clutch but did not hurt the belt. We have two more races set up for this year and I am sure the belt will be great!!
This belt showed up on time and at a good price. I am looking for a belt to be used for low speed towing of groomers, heavy sleds, and ice houses. It hasn't failied yet, seems to run cool and work well. So far so good.
I have 3 of these belts.. 1 from DK thats for my sons 05 Arctic Cat M5 and it squeals like a pig at idle and engagement.. but, the two for the 02 Polaris XC500 my other son rides seems fine.. The really big complaint I have is that the ridges on the back of the belt make it too wide to fit into a standard spare belt holder (ie... metal clip on clutch cover)
Seems Dennis Kirk has just about anything you are looking for in sled accessories. Also, my order online was shipped lightning fast. I ordered my extra belt mid-week and had it before snowmobiling that weekend.