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Sport · 2020

RC 125

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MotoLibrary Score
34 /100 Commuter
Power/Weight
0.11 hp/kg
Torque
12 Nm
Engine
125 ccm

2020 Ktm RC 125 Technical Analysis & Specification Breakdown

Positioned in Ktm's sport motorcycle lineup, the 2020 Ktm RC 125 features a 125 cc (7.6 cu in) liquid-cooled single cylinder, four-stroke configuration. In factory specification, peak output is rated at 15 HP (10.9 kW) while maximum torque reaches 12 Nm (8.9 lb-ft), transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 120 HP per liter, the engine character is reflecting a performance-oriented street tune that balances strong mid-range pull with an energetic top-end rush.

On the scales, the RC 125 measures 139 kg (306 lbs) dry, translating to a power-to-weight ratio of 0.11 HP/kg (9.27 kg per horsepower). Rider ergonomics and chassis geometry center around a 820 mm (32.3 in) seat height — resulting in a taller command-style riding posture suited to medium-to-tall inseams, combined with a 1,340 mm (52.8 in) wheelbase engineered for quick, flickable steering geometry. The 9.5-liter (2.5 US gal) fuel tank paired with a rated consumption of 2.42 L/100 km provides an estimated theoretical range of roughly 393 km (244 miles) between fill-ups.

Within MotoLibrary's Ktm archive, this model family spans 9 indexed model years from 2014 to 2023, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.

Specific Output
120 HP/L
Power-to-Weight
0.11 HP/kg (9.27 kg/HP)
Theoretical Range
~393 km (244 mi)
Engine
Displacement 125.0 ccm (7.63 cubic inches)
Engine Type Single cylinder, four-stroke
Power 15.0 HP (10.9 kW))
Torque 12.0 Nm (1.2 kgf-m or 8.9 ft.lbs)
Compression 14.5:1
Bore x Stroke 58.0 x 47.2 mm (2.3 x 1.9 inches)
Valves/Cylinder 4
Fuel System Injection
Fuel Control Double Overhead Cams/Twin Cam (DOHC)
Ignition Bosch EMS
Lubrication Wet sump
Cooling Liquid
Transmission
Gearbox 6-speed
Final Drive Chain (final drive)
Clutch Wet multi-disc clutch, mechanically actuated
Driveline 5/8  x  1/4 X Ring. Primary drive: 22:72.
Performance
Fuel Consumption 2.42 litres/100 km (41.3 km/l or 97.20 mpg)
Greenhouse Gases 56.1 CO2 g/km. (CO2 - Carbon dioxide emission)
Chassis
Frame Type Steel trellis frame, powder coated
Rake 23.5°
Front Suspension WP upside-down Ø 43 mm
Front Travel 120 mm (4.7 inches)
Rear Suspension WP monoshock
Rear Travel 150 mm (5.9 inches)
Wheelbase 1340 mm (52.8 inches)
Ground Clearance 179 mm (7.0 inches)
Wheels & Brakes
Front Tyre 110/90-R17
Rear Tyre 150/70-R17
Front Brakes Single disc. ABS. Four-piston calipers.
Front Brake Ø 300 mm (11.8 inches)
Rear Brakes Single disc. ABS. Floating disc. Single-piston caliper.
Rear Brake Ø 230 mm (9.1 inches)
Dimensions & Weight
Dry Weight 139.0 kg (306.4 pounds)
Power/Weight 0.1079 HP/kg
Seat Height 820 mm (32.3 inches) If adjustable, lowest setting.
Fuel Capacity 9.50 litres (2.51 US gallons)
Other
Starter Electric
Color Options White/Black/Orange
More from Ktm
Buying Checklist

Before You Compare This Bike

Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.

Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Torque
Torque is useful for judging real-world pull, especially for touring, commuting and loaded riding.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
Rider Profile

Who Is This Bike For?

🟢
Beginner
A2 license compatible, manageable power.
🏁
Best For
Sport & Track
📏
Seat Height
82 cm / 32.3 in
⚖️
Handling
Manageable weight for most riders
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