2025 KTM 125 Duke Specs & Review

KTM’s smallest naked brings big-bike attitude to the A1-friendly class. The 2025 KTM 125 Duke is built for riders who want sharp styling, quality components, and real-world efficiency without overkill. In this KTM 125 Duke review, we break down the 2025 KTM 125 Duke specs to show where it shines for commuting and spirited weekend rides.

Key Specs at a Glance

• Displacement: 124.99 cm³
• Power: 14.75 hp (11 kW)
• Torque: 11.5 Nm / 8.5 lb-ft
• Wet weight: 165 kg / 363.76 lbs
• Seat height: 800 mm / 31.5 "
• Engine type: 1-cylinder, 4-stroke, liquid cooled

Engine & Performance

At the heart of the 2025 KTM 125 Duke specs is a compact, efficient single: a 1-cylinder, 4-stroke engine with liquid cooling. It’s fed by Bosch EFI with a 33 mm throttle valve and managed by a Bosch EMS with RBW, delivering smooth, predictable throttle response. With 14.75 hp (11 kW) and 11.5 Nm of torque (8.5 lb-ft), the little Duke is tuned for responsive city riding and engaging backroad fun. A 6-speed transmission helps you keep the motor in its sweet spot, while an electric starter and wet-sump lubrication keep everyday operation simple and reliable.

Efficiency is a standout: fuel consumption is rated at 2.4 l/100 km (98.01 mpg), and CO2 emissions come in at 57 g/km. That’s commuter-friendly economy without dulling the ride. The bore and stroke (58 mm x 47.3 mm) and a compression ratio of 12.6 underline the engine’s eager character, while the 520 X-Ring chain handles final drive duties with durability in mind. In short, the spec sheet reads like a smart blend of usability and excitement—perfect for newer riders and veterans who appreciate a lightweight thumper that punches above its size.

Handling, Comfort & KTM 125 Duke Seat Height

Chassis hardware is classic Duke: a steel trellis frame (powder coated) and an aluminum, powder-coated subframe for a mix of rigidity and low mass where it counts. Up front, a WP APEX 43 fork teams with 150 mm of suspension travel at both ends, giving the bike a planted feel on rough city streets and enough support for spirited cornering. The wheelbase sits at 1357 mm (53.43 "), with tire sizes of 110/70 front and 150/60 rear for quick steering and reassuring grip.

The KTM 125 Duke seat height is 800 mm (31.5 "), striking a sweet spot for a wide range of riders. Shorter riders will appreciate the reach to the ground, while taller riders get decent room to move. The KTM 125 Duke weight is 165 kg (363.76 lbs) wet—balanced well enough to make low-speed maneuvers straightforward and stops predictable.

Equipment & Features

Braking hardware is serious for the class: a four-piston radial fixed caliper biting a 320 mm front disc, matched to a single-piston floating caliper and 240 mm rear disc. This setup provides strong initial bite and solid modulation for confident everyday riding. The electronics package centers on Bosch EMS with RBW, complemented by Bosch EFI for clean fueling and crisp throttle. Additional practicalities include an 8 Ah battery and an electric starter.

Suspension is handled by the WP APEX 43 fork, with 150 mm of travel at the front and rear for comfort and control. The package is rounded out by the powder-coated trellis frame and a durable 520 X-Ring chain. It’s a thoughtful spec sheet that prioritizes quality touchpoints where riders feel them most.

Who Is the 2025 KTM 125 Duke For?

This bike is ideal for learners and commuters who want a manageable, modern naked that feels premium. The smooth RBW throttle, 6-speed gearbox, and approachable 800 mm seat height make it friendly for daily use. Experienced riders will enjoy the nimble chassis, surefooted brakes, and ultra-low fuel consumption of 2.4 l/100 km (98.01 mpg) for city runs and backroad shenanigans.

Torquepedia Verdict

The 2025 KTM 125 Duke specs deliver a compelling mix of efficiency, quality components, and everyday performance. Highlights include the liquid-cooled single with Bosch EFI and RBW, serious braking hardware, and the WP APEX 43 front end—all wrapped in a lightweight trellis chassis with an accessible seat height.

Its limitations are the same as any 125: it’s built for the city and twisties more than all-day highway slogs. But judged by purpose, the 125 Duke nails it—economical, engaging, and confidence-inspiring. If you’re shopping the entry-level naked segment, this should be on your shortlist.

FAQ

• Is the 2025 KTM 125 Duke good for beginners? Yes. With 14.75 hp (11 kW), a smooth Bosch EMS with RBW, and a 6-speed transmission, it’s approachable yet engaging for new riders.

• What is the seat height of the 2025 KTM 125 Duke? The KTM 125 Duke seat height is 800 mm (31.5 ").

• How heavy is the 2025 KTM 125 Duke? Wet weight is 165 kg (363.76 lbs). Weight without fuel is 154 kg (339.51 lbs).

• What kind of brakes and suspension does it have? Front: four-piston radial fixed caliper with a 320 mm disc. Rear: single-piston floating caliper with a 240 mm disc. Front suspension is WP APEX 43, with 150 mm travel front and rear.

• What is the fuel consumption? It’s rated at 2.4 l/100 km (98.01 mpg), with CO2 emissions of 57 g/km.