I personally wouldn't go past the 59mm (seems easy enough to install), the stroker crank looks appealing but $200 bucks and a ton of work later doesn't! lol. I'm sure the 59mm will be plenty of power for me. Right now as is I'm sure it has enough power to get through most of the trails we have around here, and may even keep up with some 250's!
I'ts a 150, I'll try and get as much power out of it as I can without going overboard on spending. I don't want to put 1000 bucks into this buggy, knowing I can find a decent 250 for $1200-$1500.
@xlint89 I think that's about right, you can still get it bored to a certain point.
here is a vid you can see how thin the walls are and they guy still has to bore it out for the 63mm jug. The inner diameter is 63mm, the walls are thinner so you don't have to bore out as much on the crankcase.
http://www.youtube.com/watch?v=R1GFv...eature=channel