Sportbikes
2015KTM RC 125
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The 2015 KTM RC 125 is a lightweight sportbike designed for entry-level and younger riders seeking an accessible introduction to middleweight performance. Known for its sharp handling and aggressive styling, this 125cc machine delivers agile cornering dynamics with quality WP suspension and capable braking hardware. Its compact dimensions and 135kg weight make it ideal for new riders developing street riding skills.
- Capacity
- 124.7 ccm
- Engine
- Single, four-stroke
- Gearbox
- 6-speed
- Dry weight
- 135.0 kg
- Seat height
- 820 mm
- Power
- 15.0 HP (10.9 kW)
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- A pint-sized sport machine for spirited canyon carving, commuting and track-day schooling, teaching real sportbike technique on low power.
- Built for
- Energetic, revvy and razor-sharp; a proper baby superbike that rewards momentum and precise lines rather than brute power.
- Not ideal for
- Not for riders wanting highway speed, two-up touring, long-distance comfort or any off-road use.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Will it fit you?
Worked out in your browser - nothing is sent to usEngine
- Capacity
- 124.7 ccm
- Power
- 15.0 HP (10.9 kW)
- Engine type
- Single, four-stroke
- Power/weight ratio
- 0.1111 HP/kg (dry)
- Bore x stroke
- 58.0 x 47.2 mm
- Compression
- 14.5:1
- Cooling system
- Liquid
- Fuel system
- Injection
- Starting
- Electric
- Ignition
- Contactless, controlled, fully electronic ignition system with digital ignition timing adjustment
- Valves per cylinder
- 4
- Lubrication system
- Forced oil lubrication with 1 Eaton pump
- Torque
- Not on record - add it
Transmission
- Gearbox
- 6-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Wet multi-disc clutch / mechanically operated
Dimensions & weight
- Wheelbase
- 1210 mm
- Seat height
- 820 mm
- Dry weight
- 135.0 kg
- Fuel capacity
- 10.00 litres
- Ground clearance
- 179 mm
Chassis & suspension
- Frame
- Tubular space frame made from steel tubes, powder-coated
- Front suspension
- WP Â Suspension 4357
- Rear suspension
- WP  Suspension  4618 EM
- Front wheel travel
- 125 mm
- Rear wheel travel
- 150 mm
- Rake (fork angle)
- 23.5°
Brakes & wheels
- Front brakes
- Single disc. Four-piston calipers.
- Front brakes diameter
- 300 mm
- Rear brakes
- Single disc. Floating disc. Single-piston caliper.
- Rear brakes diameter
- 230 mm
- Front tyre
- 95/75-R17
- Rear tyre
- 115/75-R17
Other
- Color options
- Black/orange
Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.
What changed, year to year
Differences highlighted| Specification | 2014 | 2015 | 2017 | 2020 | 2023 | 2026 |
|---|---|---|---|---|---|---|
| Capacity | 125 cc | 125 cc | 125 cc | 125 cc | 125 cc | 125 cc |
| Dry weight | 135 kg | 135 kg | 135 kg | 139 kg | 147 kg | 147 kg |
| Seat height | 820 mm | 820 mm | 820 mm | 820 mm | 824 mm | 824 mm |
| Fuel capacity | 10 L | 10 L | 10 L | 9.5 L | 13.7 L | 13.7 L |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Rider Reviews
Common questions
What is the engine size of the KTM RC 125?
The 2015 KTM RC 125 has a Capacity of 124.7 ccm (7.61 cubic inches).
What engine power does the KTM RC 125 have?
The 2015 KTM RC 125 has a Power of 15.0 HP (10.9 kW).
How many gears does the KTM RC 125 have?
The 2015 KTM RC 125 has a Gearbox of 6-speed.
How much does the KTM RC 125 weigh?
The 2015 KTM RC 125 has a Dry weight of 135.0 kg (297.6 pounds).
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