AI DamageKTM 50 SX: problems, complaints, bulletins
Summary for the KTM 50 SX across 1 model years: 1 owner complaints and 0 NHTSA service bulletins, plus repair videos. Pick a year for details.
Model years
| Year | Owner complaints | involving a crash | Technical service bulletins (TSB) | YouTube repair videos |
|---|---|---|---|---|
| 2011 | 1 | 0 | 0 | 0 |
What fails most often
- 1 Engine and cooling 100% of all complaints
- 2 Powertrain 100% of all complaints
- Engine and cooling: 1 complaints (100% of all).
- Powertrain: 1 complaints (100% of all).
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Engine and cooling | 1 | 0 | 0 |
| Powertrain | 1 | 0 | 0 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
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…
What to check before buying
- Engine and cooling. Radiator and fan after a frontal hit, coolant level and condition, overheating.
- Powertrain. Shift quality under load, harsh shifts, transmission codes, CV joints.
Other models of this make
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-05.