it broke couple teeth off 3rd gear, i was having problems with the tranny all year, it was popping out of second and having a hard time from 3 to 4, i crossed the line in second right on guys ktm 525 butt. as soon as it crossed it didnt even make it down the down side of the hill. got a pick of that to trying to get it back to the pit so the next race could start. it also broke the boss in the case that the rod the shift fork mount on. i had the cases fixed and pick the motor up next week its all done and back together now, its goin on my spare racer.