My wife and I just bought leftover 02 ac 600efi esr and 550esr.I'd appreciate any opinions and info on these sleds.We've done alittle riding so far and everything seems fine but would like to know if there's any thing to look out for.Thanks in advance and pray for snow!

everything should be fine 600 might be hard on oil a friend had a 01

Both are nice sleds the 550 will impress you and the wife will love it. The only thing that would be better is if they were both efi.

put 96 studs in both of em, or maybe more on the 600. And carbides to compensate. Have fun! my dad has a 550 and he likes it a lot.

Both very nice machines .............enjoy..........tigger p.s. If you have any problems, question, just drop us a note we will help..