The Moto Ref

KTM 125 SMC R vs KTM 390 SMC R

Two supermoto bikes scored on the same 100-point system: specs side by side, points per category and a verdict that commits. These two sit in different classes, so each score is computed within its own class.

KTM 125 SMC R, 2026
KTM 390 SMC R, 2025

KTM

125 SMC R

45.9

/ 100

KTM

390 SMC R

68.3

/ 100

Winner

0 to 100 km/h

Estimated from power to weight, not a measured time.

0.00 s

KTM 125 SMC R0 km/h- s
125 SMC R
KTM 390 SMC R0 km/h- s
390 SMC R

The Ref Ring · 3.4 km · 9 corners

A straight line settles nothing.

The 390 SMC R won on points. Now the 125 SMC R and the 390 SMC R go flag to flag: braking zones, corner speed and drive off the hairpins, computed from the same specs as the scores.

Race the full lap

Points by category

Six categories, 100 points. How every point is calculated

Engine and performance

out of 25
125 SMC R
7.6
390 SMC R
18.8

Handling and chassis

out of 20
125 SMC R
7.6
390 SMC R
10.3

Value

out of 20
125 SMC R
8.2
390 SMC R
15.0

Practicality

out of 15
125 SMC R
9.2
390 SMC R
9.8

Technology

out of 10
125 SMC R
5.2
390 SMC R
8.3

Reliability and ownership

out of 10
125 SMC R
8.1
390 SMC R
6.1

Specs side by side

Full specification comparison: KTM 125 SMC R versus KTM 390 SMC R
SpecKTM125 SMC RKTM390 SMC R
Engine
EngineSingle cylinder, liquid cooled, SOHCSingle cylinder, liquid cooled, DOHC
Displacement125 cc398.7 cc
Power15 hp at 10,000 rpm45 hp at 8,500 rpm
Torque11.5 Nm at 7,750 rpm39 Nm at 7,000 rpm
Power to weight0.10 hp/kg0.28 hp/kg
Chassis
Wet weight152 kg161 kg
Front suspensionWP APEX 43 mm open cartridge, 230 mmWP APEX 43 mm open cartridge, 230 mm
Front adjustabilityNon-adjustableCompression and rebound
Rear suspensionWP APEX monoshock, 230 mmWP APEX monoshock, 230 mm
Rear adjustabilityPreload onlyPreload and rebound
Front brake320 mm, radial 4-piston320 mm, radial 4-piston
ABSSwitchable ABSCornering ABS
Dimensions
Seat height860 mm860 mm
Wheelbase1453 mm1453 mm
Fuel capacity9 L9 L
Claimed consumption2.4 L/100 km3.6 L/100 km
Fuel range375 km250 km
Ownership
Price€5,299€6,999
Service interval10,000 km10,000 km
Valve check20,000 km20,000 km
Warranty2 years2 years
Equipment
DashTFTTFT
Ride modesNoYes
Traction controlNoYes
QuickshifterOptionalOptional
Cruise controlNot availableNot available
ConnectivityYesYes

Verdict

The KTM 390 SMC R wins this comparison comfortably, 68.3 points to 45.9.

The gap of 22.4 points is built mostly in engine and performance, where the 390 SMC R takes 11.2 points out of the 125 SMC R. Scores are computed within each bike's class from published spec data; the full formula is on the methodology page.

On the road the 390 SMC R is the quicker machine: 45 hp and 39 Nm moving 161 kg, against 15 hp and 11.5 Nm moving 152 kg for the 125 SMC R. That is 0.28 hp per kilo playing 0.10.

The 125 SMC R costs €5,299, which leaves €1,700 in your pocket against the 390 SMC R at €6,999. Service intervals run 10,000 km on the 125 SMC R and 10,000 km on the 390 SMC R.

Better for city and commuting

KTM 390 SMC R

A 860 mm seat, 250 km of tank range and the stronger practicality and value scores make it the easier bike to live with daily.

Better for weekend twisties

KTM 390 SMC R

45 hp pushing 161 kg with WP APEX 43 mm open cartridge up front. It takes the combined engine and handling points.

Better for longer trips

KTM 390 SMC R

250 km between fuel stops and the better equipment score. Distance rewards range and rider aids, and it has more of both.

Frequently asked

Which is faster, the KTM 125 SMC R or the KTM 390 SMC R?
The KTM 390 SMC R. It carries 0.28 hp per kilo (45 hp, 161 kg wet) against 0.10 hp per kilo for the KTM 125 SMC R (15 hp, 152 kg).
Is the KTM 125 SMC R cheaper than the KTM 390 SMC R?
The KTM 125 SMC R is cheaper at €5,299 list, €1,700 less than the KTM 390 SMC R at €6,999.
Which is better for shorter riders?
Neither has an advantage on paper: both seats sit at 860 mm. Weight is the tiebreaker, and the KTM 125 SMC R is lighter.
Which has better technology, the 125 SMC R or the 390 SMC R?
The KTM 390 SMC R, which scores 8.3 of 10 tech points with cornering ABS, a TFT dash, traction control and phone connectivity. The KTM 125 SMC R counters with a TFT dash and phone connectivity.
Which goes further on a tank?
The KTM 125 SMC R: 375 km from its 9 litre tank at the claimed consumption, against 250 km for the KTM 390 SMC R.
Which bike wins overall?
The KTM 390 SMC R, scoring 68.3 of 100 against 45.9 on our within-class points system. The full breakdown and formula are public on the methodology page.

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