What category is the 2021 KTM RC 125?

General information
Category	Sport
Year	2021
Model	KTM RC 125

Engine and Transmission Specifications
Greenhouse gases	56.1 CO2 g/km. (CO2 - Carbon dioxide emission)
Fuel consumption	2.42 litres/100 km (41.3 km/l or 97.20 mpg)
Driveline	520 X-Ring
Clutch	Wet multi-disc clutch, mechanically actuated
Transmission type	Chain (final drive)
Gearbox	6-speed
Cooling system	Liquid
Lubrication system	Wet sump
Ignition	Bosch EMS
Fuel control	Double Overhead Cams/Twin Cam (DOHC)
Fuel system	Injection
Valves per Cylinder	4
Bore x Stroke	58.0 x 47.2 mm (2.3 x 1.9 inches)
Compression	14.5:1
Torque	12.0 Nm (1.2 kgf-m or 8.9 ft.lbs)
Power	15.0 HP (10.9 kW)
Engine type	Single cylinder, four-stroke
Capacity:	125.0 ccm (7.63 cubic inches)
Brakes, suspension, Frame and wheels
Rear brakes	Single disc. ABS. Single-piston floating calliper.
Diameter	320 mm (12.6 inches)
Front brakes	Single disc. ABS. Four-piston radial fixed calliper.
Rear tire	150/70-R17
Front tire	110/90-R17
Rear wheel travel	150 mm (5.9 inches)
Rear Suspension	WP APEX - Monoshock
Front wheel travel	120 mm (4.7 inches)
Front Suspension	WP APEX 43
Rake (fork angle)	23.5°
Frame type	Steel trellis frame, powder coated

Physical measures and capacities
Fuel capacity	13.70 litres (3.62 US gallons)
Wheelbase	1340 mm (52.8 inches)
Ground clearance	158 mm (6.2 inches)
Seat height	824 mm (32.4 inches) If adjustable, lowest setting.
Power/weight ratio	0.1020 HP/kg
Dry weight	147.0 kg (324.1 pounds)
Other specs
Maintenance	Find parts, fluids, filters, maintenance tools and service items on eBay
Light	LED headlight
Instruments	TFT display
Starter	Electric
Color options	White/Orange, Black/Orange

Performance Profile & Rider Fit

15 hp

Peak Power

10.5s

0-60 mph

Best For

Track55%

City82%

Cornering80%

Daily Riding75%

Touring15%

Passenger20%

Rider Profile

Best For	Ideal for beginners and A1 licence holders learning sportbike dynamics; also a fun, cheap toy for experienced riders.
Purpose	A pint-sized sport machine for spirited canyon carving, commuting and track-day schooling, teaching real sportbike technique on low power.
Rider Fit	Committed sporty stance with clip-ons and rearsets, tall 824mm seat, but featherweight 147kg makes it easy to flick and manage.
Character	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.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2021 KTM RC 125 Rider Ergonomics Assessment

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Inseam (optional)

Units

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Feet:

At 824mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with balls of both feet on the 2021 KTM RC 125, with a cramped knee angle of around 70 degrees and a forward-leaning riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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