What causes Stator/charging system failure on the Ktm Duke 125?

Battery voltage at idle, dimming lights, electrical gremlins Estimated fix cost: $150-$300

What causes Trellis frame cracking near welds on the Ktm Duke 125?

Inspect frame welds closely, especially near swingarm pivot Estimated fix cost: $200-$500

Check oil level, look for seepage around engine cases Estimated fix cost: $80-$200

Oil stains on fork legs, soft front suspension feel Estimated fix cost: $60-$150

Known issues to inspect before buying a used Ktm Duke 125. What to check and how much repairs cost.

SERIOUS

Battery voltage at idle, dimming lights, electrical gremlins

Fix cost: $150-$300

SERIOUS

Inspect frame welds closely, especially near swingarm pivot

Fix cost: $200-$500

MODERATE

Check oil level, look for seepage around engine cases

Fix cost: $80-$200

MINOR

Oil stains on fork legs, soft front suspension feel

Fix cost: $60-$150

☐Check service history and oil change intervals

☐Cold start test, listen for rattles

☐Inspect frame welds under good lighting

☐Test all electrics including charging voltage

Decent but needs diligent maintenance, avoid neglected examples