2025 · Naked Bike · Buyer's Guide
Big City Soul, Tiny Engine
KTM's entry point into the naked class was not built to feel like an entry point. The 125 cc liquid-cooled single makes 15 hp at 10,000 rpm and 8 lb-ft at 7,750, carried in a steel trellis frame with a 12.6 in (320 mm) front disc, full-size 17-inch wheels and a 150/60 rear tire. The cockpit runs a color TFT with smartphone connectivity, the headlight is LED, and ABS with cornering ABS is standard. A quickshifter is on the options list rather than fitted. Sit on it cold in a parking lot and nothing in the proportions tells you this is the small one.
You carry speed on this bike rather than make it. Peak power lives near the top of the rev range, so you use all six gears and keep the single spinning, and in return you get steering that costs almost no effort, running costs low enough to ignore, and manners that let a newer rider build confidence instead of managing the machine. That combination makes it a genuinely good first motorcycle and a cheap second one for city duty. The honest caveat: rider aids stop at ABS and cornering ABS, and highway pace takes planning rather than a wrist flick.
Spec sheets don't ride bikes, but they set the baseline.
| Power | 15 hp (11 kW) @ 10,000 rpm |
|---|---|
| Torque | 8 lb-ft (12 Nm) @ 7,750 rpm |
| Displacement | 125 cc |
| Engine | Single-cylinder |
| Cooling | Liquid-cooled |
| Gearbox | 6-speed |
| Front brake | 320 mm |
| Front tire | 110/70-17 |
| Rear tire | 150/60-17 |
| Seat height | 31.5 in (800 mm) |
| Fuel capacity | 4.0 gal (15 L) |
Equipment check
Chassis
Connectivity
Drivetrain
Lighting
Safety
Where this KTM 125 Duke pulls ahead of — or falls behind — its rivals on the numbers, and the typical bike in its class on character.
Power
Torque
Displacement
Seat height
Forget spec-sheet bragging. Here's who the 125 Duke is actually built for.
City miles all week, Skyline on Sunday: that is the exact life this bike was drawn for. Light in traffic, cheap to keep running, and it photographs like a much bigger Duke.
Made for Bay Area Ridge Roads · San Francisco / Bay Area · Skyline Boulevard / Alice's Restaurant
The twisty stuff will be a blast and costs you almost nothing to enjoy. It's the long, open highway hauls between the good roads where 15 hp will test your patience.
Made for Austin / Texas Hill Country · Twisted Sisters · Austin / Handbuilt Motorcycle Show
You will love how it corners and resent how little it has when the canyon opens out. Buy it as a second bike for pure corner speed, not as the one you ride to keep pace.
Made for Angeles Crest Highway · Coronado Trail / US 191 · Highway 1 / Big Sur
If you're cross-shopping the older generation, here's what changed.
Previous generation · 2017–2024
Big Attitude, Tiny Engine
Compare to the previous model →If this one isn't quite the fit, these are the bikes worth riding back-to-back against it.
