14 August. Friday 2026
KTM 125 Duke - 2021 Specifications and Reviews
The 2021 KTM 125 Duke is an agile, lightweight naked bike designed for new riders and commuters seeking accessible performance. Powered by a 15 horsepower single-cylinder engine with modern fuel injection and liquid cooling, it delivers punchy acceleration and sharp handling in a compact, affordable package. Known for its stylish design and reliable daily-use capability, the 125 Duke excels as an ideal entry-level motorcycle for urban riding and learner riders.
General information | |
| Category | Naked bike |
| Year | 2021 |
| Model | KTM 125 Duke |
| | |
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 | 5/8  x  1/4 (520) O Ring. Primary drive: 22:72. |
| Clutch | Wet multi-disc clutch, mechanically actuated |
| Transmission type | Chain (final drive) |
| Gearbox | 6-speed |
| Cooling system | Liquid |
| Lubrication system | Wet sump |
| Ignition | Contactless, controlled, fully electronic ignition system with digital ignition timing adjustment, type Kokusan |
| Fuel control | Double Overhead Cams/Twin Cam (DOHC) |
| Fuel system | Injection |
| Bore x Stroke | 58.0 x 47.2 mm (2.3 x 1.9 inches) |
| 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 | 300 mm (11.8 inches) |
| Front brakes | Single disc. ABS. Four-piston radial fixed calliper |
| Rear tire | 150-17 |
| Front tire | 110-17 |
| Rear wheel travel | 150 mm (5.9 inches) |
| Rear Suspension | WP Apex Monoshock |
| Front wheel travel | 142 mm (5.6 inches) |
| Front Suspension | WP Apex Ø 43 mm |
| Rake (fork angle) | 25.0° |
| Frame type | Steel trellis frame, powder coated |
Physical measures and capacities | |
| Fuel capacity | 13.40 litres (3.54 US gallons) |
| Wheelbase | 1357 mm (53.4 inches) |
| Ground clearance | 175 mm (6.9 inches) |
| Seat height | 830 mm (32.7 inches) If adjustable, lowest setting. |
| Power/weight ratio | 0.1079 HP/kg |
| Dry weight | 139.0 kg (306.4 pounds) |
Other specs | |
| Maintenance | Find parts, fluids, filters, maintenance tools and service items on eBay |
| Starter | Electric |
| Color options | Black/orange |
Performance Profile & Rider Fit
14.8 hp
Peak Power
11.5s
0-60 mph
Best For
Track35%
City92%
Cornering78%
Daily Riding85%
Touring28%
Passenger45%
Rider Profile
| Best For | Ideal first bike for beginners and A1 licence holders; approachable, forgiving power delivery with premium components that reward learning. |
| Purpose | A nimble entry-level naked built for city commuting, learning throttle and cornering skills, and fun back-road blasts. |
| Rider Fit | Light and slim with an 800mm seat and upright, roomy naked ergonomics; WP APEX 43 forks and 150mm travel give a controlled, planted ride. |
| Character | A sharp, playful single-cylinder streetfighter that punches above its 15 PS with aggressive KTM styling and eager, flickable handling. |
| Not Ideal For | Not for riders wanting highway speed, two-up touring, or off-road duty; the modest 125cc output limits sustained fast cruising. |
Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.
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Rider Reviews
Total comments: 1
MotorcycleDB Review
The 2021 KTM 125 Duke is a sleek and powerful motorcycle that is perfect for riders looking for a lightweight and agile option. This bike features a 125cc engine that delivers impressive performance and acceleration. The compact design and nimble handling make it ideal for navigating through city streets and tight corners with ease. The 2021 KTM 125 Duke also comes equipped with advanced braking and suspension systems for added safety and stability on the road. With its sporty styling and cutting-edge technology, this motorcycle is an excellent choice for riders who want a thrilling and dynamic riding experience. Overall, the 2021 KTM 125 Duke offers a perfect balance of power, agility, and style. Its lightweight design and impressive performance make it a top choice for riders who crave excitement on the road. Whether you're a new rider or a seasoned enthusiast, this motorcycle is sure to impress with its responsive handling and advanced features. If you're in the market for a versatile and thrilling bike, the 2021 KTM 125 Duke is definitely worth considering for your next adventure.Add a Comment
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