14 August. Friday 2026
KTM 150 SX - 2025 Specifications and Reviews
The 2025 KTM 150 SX is a lightweight two-stroke motocross bike engineered for competitive junior and amateur riders seeking explosive acceleration and nimble handling. Its fuel-injected 144cc engine delivers sharp power characteristics ideal for technical terrain, while the aluminum chassis and precision Brembo braking system provide confidence-inspiring control. Best known for bridging the gap between smaller displacement classes and larger bikes, it excels in motocross racing and off-road training.
General information | |
| Color Options | Orange/black/grey |
| Category | Cross / motocross |
Engine and Transmission Specifications | |
| Starting | Electric |
| Clutch | Multi-plate clutch, Brembo hydraulics |
| Final Drive | Chain (final drive) |
| Gearbox | 6-speed |
| Cooling System | Liquid |
| Ignition | Vitesco Technologies EMS |
| Induction | Injection. Keihin EFI, throttle body 39 mm |
| Bore x Stroke | 58.0 x 54.5 mm (2.3 x 2.1 inches) |
| Engine Details | Reed intake. |
| Engine Type | Single cylinder, two-stroke |
| Capacity: | 144.0 ccm (8.79 cubic inches) |
Physical measures and capacities | |
| Fuel Capacity | 7.20 litres (1.90 US gallons) |
| Wheelbase | 1493 mm (58.8 inches) |
| Ground Clearance | 359 mm (14.1 inches) |
| Seat Height | 958 mm (37.7 inches) If adjustable, lowest setting. |
| Dry Weight | 92.6 kg (204.1 pounds) |
| | |
KTM 150 SX dimensions and frame | |
| Wheels | Spoked wheels with aluminium rims |
| Rear Brakes | Single disc. Two-piston calipers. |
| Brake Disc Diameter | 220 mm (8.7 inches) |
| Front Brakes | Single disc. Four-piston calipers. |
| 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 (AER), Ø 48 mm |
| Frame | Central double-cradle-type 25CrMo4 steel. Aluminum-reinforced polyamide subframe. |
| | |
Other specs | |
| Maintenance | Find parts, fluids, filters, maintenance tools and service items on eBay |
| Update specs | Report missing specs or required updates. |
| Rake (fork angle) | 26.1° |
| Exhaust system | Aluminum |
| Driveline | 520 X-ring chain |
| Year of manufacture | 2025 |
| Motorcycle name | KTM 150 SX |
Performance Profile & Rider Fit
Best For
Track90%
City5%
Cornering88%
Daily Riding5%
Touring5%
Passenger0%
Rider Profile
| Best For | Best suited to intermediate-to-advanced off-road riders, as a small-bore two-stroke motocross machine demands active riding and precise clutch and throttle control to stay in its power band. |
| Purpose | Built purely for motocross and cross-country racing on dirt tracks, not for street or commuting use. |
| Rider Fit | Its ultra-light dry weight and tall seat height favor smaller or lighter riders who can still comfortably manage the high seat and aggressive riding stance. |
| Character | A high-strung, revvy two-stroke that rewards aggressive riding, quick gear changes, and an active body position with sharp, flickable handling. |
| Not Ideal For | Not suitable for riders wanting a comfortable, relaxed, road-going or touring motorcycle, or anyone seeking passenger capability or long-distance comfort. |
Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.
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