22 June. Monday 2026
KTM 125 SX - 2023 Specifications and Reviews
The 2023 KTM 125 SX is a lightweight two-stroke offroad machine designed for young riders and beginners stepping up to competitive motocross. Its nimble 124.8cc engine delivers responsive power with minimal weight, making it ideal for learning proper technique on the track. Known for its sharp handling and KTM's proven reliability, the 125 SX remains the entry-level choice for aspiring motocross racers.
General information | |
| Category | Enduro / offroad |
| Year | 2023 |
| Model | KTM 125 SX |
Engine and Transmission Specifications | |
| Driveline | X-Ring 5/8 x 1/4´ chain |
| Clutch | Wet multi-disc DS clutch, Brembo hydraulics |
| Transmission type | Chain (final drive) |
| Gearbox | 6-speed |
| Cooling system | Liquid |
| Lubrication system | Wet sump |
| Ignition | Vitesco Technologies EMS |
| Fuel system | Injection |
| Bore x Stroke | 54.0 x 54.5 mm (2.1 x 2.1 inches) |
| Power | 15.0 Horsepower">HP (10.9 Kilowatt">kW)) |
| Engine type | Single cylinder, two-stroke |
| Capacity: | 124.8 ccm (7.62 cubic inches) |
Brakes, suspension, Frame and wheels | |
| Rear brakes | Single disc |
| Diameter | 260 mm (10.2 inches) |
| Front brakes | Single disc |
| Rear tire | 2.15-19 |
| Front tire | 1.6-21 |
| Rear wheel travel | 300 mm (11.8 inches) |
| Rear Suspension | WP XACT Monoshock with linkage |
| Front wheel travel | 310 mm (12.2 inches) |
| Front Suspension | WP XACT-USD, Ø 48 mm |
| Rake (fork angle) | 26.1° |
| Frame type | Central double-cradle-type 25CrMo4 steel |
| | |
Physical measures and capacities | |
| Fuel capacity | 7.20 litres (1.90 US gallons) |
| Ground clearance | 359 mm (14.1 inches) |
| Seat height | 958 mm (37.7 inches) If adjustable, lowest setting. |
| Power/weight ratio | 0.1623 HP/kg |
| Dry weight | 92.4 kg (203.7 pounds) |
Other specs | |
| Starter | Electric |
| Color options | White/orange/grey |
Rider Reviews
Total comments: 1
MotorcycleDB Review
The 2023 KTM 125 SX is a powerful and agile motocross bike that is sure to impress both amateur and professional riders. With its lightweight frame and top-of-the-line suspension, this bike offers excellent handling and maneuverability on the track. The 125cc engine provides plenty of power, allowing riders to conquer even the most challenging of courses. Additionally, the bike's sleek and modern design is sure to turn heads both on and off the track. Overall, the 2023 KTM 125 SX is a fantastic choice for anyone looking for a high-performance motocross bike. In conclusion, the 2023 KTM 125 SX is a top-of-the-line motocross bike that offers exceptional performance and handling. Whether you're a seasoned pro or just starting out in the sport, this bike is sure to impress with its powerful 125cc engine and agile maneuverability on the track. Additionally, the bike's sleek and modern design is sure to make a statement wherever you go. Overall, the 2023 KTM 125 SX is a fantastic choice for anyone looking for a high-performance motocross bike that can handle anything the track throws at it.Add a Comment
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