To my knowledge this machine is essentially the same as the Bear Tracker. However exhaust companies like FMF Racing, don't often list upgrades for the Bruin 250. They show Bruin or Bruin 350 and they show Bear Tracker. The part numbers are different between Bear Tracker and what is listed for Bruin. Therefore my question is:

Though my machine is basically a Bear Tracker, is the exhaust the same as the Bruin 350 and not the old B.T? Essentially, should I buy the pipe for the B. T. or Bruin 350?

Also, since I want to add power to this machine, has anyone worked with the 230cc engine? Any recomendations? I'm planning a jet kit, and likely a filter, but anything else?

Some threads recommended a "Air box mod" What is it exactly and I'd probably want to do this also wouldn't I?

Any and all recommendations appreciated.