Blue smoke from the exhaust on a KTM 125 Duke 2026
Is your KTM 125 Duke 2026 showing "Blue smoke from the exhaust"? Here's the most likely cause, the checks to run, and the parts that fit your bike.
Technical bulletin
KTM 125 Duke 2026 — owner breakdown
The KTM 125 Duke 2026 is a Austrian-built small-displacement 125cc four-stroke machine, catalogued from 2011 to 2026. Checks below are ordered for this bike.
- Engine
- 125 cm³ · four-stroke
- Category
- small-displacement
- Production years
- 2011–2026
- Newest model year
- 2026
Catalog data and community feedback — indicative markers, not a workshop manual.
⚠️ This tool helps you understand what's going on with your motorcycle; it doesn't replace the inspection or judgment of a certified mechanic. If in persistent doubt, if a safety-critical part is involved (braking, steering, bearings, transmission), or if the problem keeps recurring, have the diagnosis confirmed at a workshop before doing any work.