yfz 450 help
#1
yfz 450 help
hi need help. i own a 07 yfz450 with Athena 98mm big bore kit and other upgrades. i was riding this weekend when out of the blue it died down. it didnt wanna move still was running. i shut it off maybe 1 hour. started it back up smoked bad from exhuast is this rings, valves please help