KTM 125 SMC R 2026
The 390 SMC R's chassis with a learner-legal engine in it.
45.9/ 100
Scored within supermoto, methodology here
€5,299
list price
- power
- 15 hp
- wet weight
- 152 kg
- tank range
- 375 km
The short version
KTM built the 125 SMC R the expensive way: the full 390 SMC R chassis, 230 mm of WP APEX travel, a 320 mm disc on a radial four-piston caliper and a 4.2 inch TFT, then dropped in the 15 hp single the A1 licence allows. It is the most serious piece of hardware a sixteen-year-old can legally ride, and it weighs like it.
Where it wins
- Full-size 390 SMC R chassis with 230 mm of WP APEX travel
- 320 mm disc and radial four-piston caliper with a supermoto ABS mode
- 4.2 inch TFT with connectivity and 10,000 km service intervals
Where it loses
- 152 kg wet is 16 to 25 kg heavier than its A1 rivals
- 15 hp moving that mass makes it the slowest feeling bike in the class
- Costs over a thousand euro more than the Aprilia SX 125
Score breakdown
Engine and performance
7.6 / 25Handling and chassis
7.6 / 20Value
8.2 / 20Practicality
9.2 / 15Technology
5.2 / 10Reliability and ownership
8.1 / 10The full review
What the 125 SMC R actually is
KTM did not build a 125 supermoto; it built a 390 SMC R and fitted the smallest engine in the catalogue. Frame, 43 mm WP APEX fork, 230 mm of travel at both ends, the 320 mm disc, the 1,453 mm wheelbase and the 860 mm seat are all shared with the 45 hp bike. For a learner that is a genuine gift: the chassis skills this bike teaches transfer straight up the range, because it is literally the same chassis.
The catch is stamped on the scales. At 152 kg wet the KTM carries 16 kg more than the Aprilia SX 125 and 25 kg more than the Fantic XMF 125, and with every bike in this class capped at 15 hp there is no engine advantage to hide behind. Full-size hardware costs full-size kilograms, and the lighter Italians simply feel livelier everywhere the licence class lets them go.
Engine and electronics
The 125 cc single makes its 15 hp at 10,000 rpm through a six-speed box with a slipper clutch and ride-by-wire, and the honest reading of the spec sheet is that the engine is the least interesting part of the bike. A1 law fixes the power; what KTM adds around it is the class's only real electronics story: two-channel ABS with a proper supermoto mode that frees the rear wheel, a 4.2 inch bonded-glass TFT and phone connectivity as standard. The quickshifter stays on the options list, a habit KTM refuses to break at any displacement.
Nothing else at this price puts a radial four-piston caliper on a 320 mm disc, and the brake is the component that makes the bike feel expensive. Learning to trail brake a supermoto on hardware this good, with ABS watching over the experiment, is the strongest argument the 125 SMC R makes.
The verdict against its rivals
At 5,299 EUR the KTM asks four figures more than the Aprilia SX 125 and a few hundred over the Fantic XMF 125, and it answers with equipment neither can match: the TFT, the connectivity, the supermoto ABS mode, the four-piston radial brake and 10,000 km service intervals that halve the workshop visits of both Italians. As an ownership proposition it is comfortably the most grown-up bike in the class.
Whether it is the most fun is a closer call, and the weight is the reason. The Fantic undercuts it by 25 kg and the Aprilia by 16, and on a 15 hp bike that margin is the difference between flicking and steering. Buy the KTM to learn on the best hardware and keep the running costs sane; buy light if the grin per corner is the only number that matters.
Full specs
| Engine | |
|---|---|
| Engine | Single cylinder, liquid cooled, SOHC |
| Displacement | 125 cc |
| Power | 15 hp at 10,000 rpm |
| Torque | 11.5 Nm at 7,750 rpm |
| Power to weight | 0.10 hp/kg |
| Chassis | |
| Wet weight | 152 kg |
| Front suspension | WP APEX 43 mm open cartridge, 230 mm |
| Front adjustability | Non-adjustable |
| Rear suspension | WP APEX monoshock, 230 mm |
| Rear adjustability | Preload only |
| Front brake | 320 mm, radial 4-piston |
| ABS | Switchable ABS |
| Dimensions | |
| Seat height | 860 mm |
| Wheelbase | 1453 mm |
| Fuel capacity | 9 L |
| Claimed consumption | 2.4 L/100 km |
| Fuel range | 375 km |
| Ownership | |
| Price | €5,299 |
| Service interval | 10,000 km |
| Valve check | 20,000 km |
| Warranty | 2 years |
| Equipment | |
| Dash | TFT |
| Ride modes | No |
| Traction control | No |
| Quickshifter | Optional |
| Cruise control | Not available |
| Connectivity | Yes |
Compare the 125 SMC R
Fantic XMF 125 Performance vs KTM 125 SMC R
15 hp vs 15 hp / 127 kg vs 152 kg
Aprilia SX 125 vs KTM 125 SMC R
15 hp vs 15 hp / 136 kg vs 152 kg
KTM 125 SMC R vs Suzuki DR-Z4SM
15 hp vs 38 hp / 152 kg vs 154 kg
KTM 125 SMC R vs KTM 390 SMC R
15 hp vs 45 hp / 152 kg vs 161 kg
Ducati Hypermotard 698 Mono vs KTM 125 SMC R
77.5 hp vs 15 hp / 161 kg vs 152 kg
Frequently asked
- Is the KTM 125 SMC R A2 licence legal?
- Yes. The KTM 125 SMC R makes 15 hp (11 kW), inside the 35 kW A2 ceiling, so it is sold A2 compliant with no restriction kit required.
- How fast is the KTM 125 SMC R?
- Our power-to-weight model estimates 0 to 100 km/h in about 15.0 seconds, from 15 hp moving 152 kg wet. That is an estimate for comparison, not a measured time, and it is labelled that way everywhere on this site.
- What is the fuel range of the KTM 125 SMC R?
- About 375 km on paper: a 9 litre tank against a claimed 2.4 L/100 km. Ride it with enthusiasm and the maths gets worse, never better.
- How tall is the seat on the KTM 125 SMC R?
- The KTM 125 SMC R seat sits at 860 mm, which is on the tall side, so shorter riders should sit on one before signing anything. At 152 kg wet, weight does the rest of the talking at a standstill.
- How much does the KTM 125 SMC R cost?
- €5,299 list price in the EU market this site scores. It earns 8.2 of 20 value points on our formula, which weighs price against equipment and running costs.
The workshop
Build your 125 SMC R
The upgrades owners actually fit, at typical retail prices. Tap a part to bolt it on and I re-run the full 100-point scorecard on your build, same math as the official score above. Shop links are affiliate links: they support the site and cost you nothing extra.