Click to view attachmentJust pick-up my new 600 Switchback with racer decals last month, and was looking to put some more HP under the hood. Looking at the new 660 kit from SLP: has anyone done this to there sled yet? what's your take on this new kit,? I no it's a new kit but was hoping to get some input so I don't waste any green backs I'm waiting for my exhaust to get back from ceramic coating this should help. :help:

As long as the porting is cleaned up and corrected for the over-bore, it'll rip. I haven't really heard anything about SLP's 660 kit, but their stuff usually works real well. The guys out west all swear by the Carl's Cycle kit (built by Jack Struthers of Poo racing fame). My only concern with those kits is the noticable amount of scuffling/wear you get on the piston skirt with his motors. They are the strongest 660s though...

Thank's Matt
I know this is all new kit, Kit comes with new jugs, But they suggest that you also buy the air box kit and pipes for best results, but dam your now talking about $3000. gran I was told by one of my riding buds about CopperCity out of Minn. Was told they get great results out of Poos. have you heard of them?