Dr350 over bore/big bore

[Justin_S]

Had to tear the bike down due to snapped exhaust valve. Want some input on either 3/4mm over bore or a 440 big bite kit from procycle. Anyone running these setups? Reliable? Best bang fit the buck?

[zig06]

"There's no replacement for displacement".  ProCycle is a good shop, if you follow what they recommend then it will be reliable, maybe not cheap $$, but it will be a good product.  Thinking about one of their 790 kits for my DR650, just need to get the funds together.

[NemadjiMan]

I had the Thumper Racing 435 Kit in my 1992 DR350S.  It was GREAT.  Trouble free and very fun.  I did burn out a clutch in the Black Hills though.  I ended up replacing the clutch pack and the outer basket, which was badly grooved.