I have an 05 YFZ that needs a complete rebuild, I'm talkin everything. I've got a loan for 10 grand coming, not sayin from where. haha. I could probably get 1500 - 2000 for my Yamaha as it sits, which at best puts me at 12000. I'm planning to race all the MX Nationals this year, tryin to take a class championship or two. Would it really be worth it to buy a KTM for 11 g's instead of redoing my Yamaha (already set up for MX) for about 5 g's.

I know its a sick quad, I know its fast, I know its about as good as it gets, but how is it holding up? How long are you getting out of the motors, whats wearing out prematurely?