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I got in contact with David from Rooster Built to test out on of their clutch kits and to be honest I couldn't be happier. The kit includes two springs one for primary and one for secondary , a new helix and aswell 15 grams overall weight to the primary , my brother has the same sled but without the clutch kit so we could run side by side tests to see how much better the clutch kit made my sled, snow conditions were nice and deep lots of long pulls and tree slaying , we pulled clutch covers off and right away you could tell the difference in temperature , my brothers was boiling the water mine was not even close to the same temperature, I could touch mine with my hands , also the sled back shifts way smoother and maintains rpm much better , we found a nice big hill and put them to the test and the track speed was by far superior to the stock 850 clutching ! Just thought I would give my review on these clutch kits I couldn't be happier ! I was really getting sick of burning belts every couple rides !
