Transmission locked up. Upon external inspection of the case, the breather hose was filled with a milky substance. We then split the engine case, removed clutch assembly to find one of the clutch bolts had broken off in block, five teeth were broken off counter shaft and two were broken off main shaft, the engine case was also cracked at internal water port causing radiator fluid to leak into case (explaining the milky substance in hose), also a loose dowel was found inside the case. We have sought assistance thru the dealership we purchased the bike from but have received no help, answers, warranty claim assistance, or reimbursement. *Tr
Engine & cooling
KTM 50 SX Engine problems by year
1 complaints filed with NHTSA about the KTM 50 SX's engine & cooling. Stalling, loss of power, oil consumption, overheating, head gaskets, timing chains and engine failure.
Engine complaints by model year
| Year | Engine complaints | Crashes | Injuries | Recalls |
|---|---|---|---|---|
| 2011 | 1 | 0 | 0 | 0 |
Latest 50 SX engine complaints
Source: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked daily. Complaints are owners' own reports and are not verified. How we use the data