just about have 5000 miles on my 2006 600sdi with the 144. love the sled but i had a few problems with it early on. clutching was never right from the dealer, and i needed to get the ecu remapped after my exhaust was glowing red one night. anyone with this sled have problems hitting peak rpms after riding a straight stretch of trails, or riding with little change in throttle position for a few minutes? ive always had this problem, but learned to deal with it. i ride trails rarely but it still kind of bugs me. whats everyone running for clutching, and how are belts holding up? the inside half of the primary gets scolding hot on this sled, so i threw on a side panel vent and switched to the 166 belt that holds up a little better. im currently running a 160/290 primary spring with 19grams of pin weight, a doo roller secondary, straight 44, and the purple doo secondary spring. 19/45 gearing. rips pretty good, might try a 44/40 and see how that works out. all riding done in the u.p.
