I agree that if the kit is built right it will be very reliable - especially if it's fitted with a long rod crankshaft and the compression ratio is kept within check. I take issue with the "hang with a 250r" line though. The Blaster, no matter what's done to it will, simply put, never come close to hanging with a TRX250R, that is if the whole range of operating conditions/quality components are considered. Don't get me wrong (no hate mail please) I love the Blaster and I love to drive them. We own one and are going to buy another in the near future. But "facts is facts" - tear apart the two engines or complete quads side by side, you'll see. It's an antiquated generic engine design that's housed with moderate service duty components and its chassis is clearly entry level.