Where is the best place to get sprockets and chain? Brand suggestions?
Uh...
Ya know, Dennis Kirk is probably just as good a source as anyone.
Moose Racing stuff is darn good. Sunstar (they make a lot of the OEM stuff), for that matter makes pretty good stuff too. RK, Regina and DID are all good chains.
If you want to go spendy, Renthal sprockets are hard to beat.
The tri-metal sprockets that are out there are awesome. Sidewinder sells them, but someone else makes them for everyone. I've seen them coming down in price in the backs of MXA and Dirt Rider recently. Bang for the buck, they're probably the way to go. Bargo's still running his and it looks great. - it's what he replaced the stocker with three years ago.