2020 KTM 125 SX vs 2021 KTM 150 XC-W TPI
Full specifications comparison •
2 motorcycles
Full Specifications
Differs
Same
| General |
| Colours | White, Orange | Orange/white |
| Dimensions |
| Ground Clearance (in.) | - | 14.6 inches |
| Ground Clearance (mm) | - | 370 mm |
| Seat Height | - | 950 mm / 37.4 in. |
| Wheelbase | - | 1471 mm / 57.9 in. |
| Weights & Capacities |
| Dry Weight | 137 kg / 302.0 lbs | 96.8 kg / 213.4 lbs |
| Fuel Capacity | - | 9.00 litres / 2.38 US gallons |
| Performance |
| Power-to-Weight Ratio | 0.1095 HP/kg | - |
| Engine |
| Bore x Stroke (in,) | 2.1 x 2.1 inches | 2.3 x 2.1 inches |
| Bore x Stroke (mm) | 54.0 x 54.5 mm | 58.0 x 54.5 mm |
| Displacement (cc) | 124.8 cc | 144.0 cc |
| Displacement (ci) | 7.62 cubic inches | 8.79 cubic inches |
| Engine Type | Single cylinder, two-stroke | Single cylinder, two-stroke |
| Fuel Control | Double Overhead Cams/Twin Cam (DOHC) | - |
| Engine Detail | - | Reed intake. |
| Fuel System | Injection | Injection |
| Engine Lubrication | Wet sump | - |
| Ignition | Contactless, controlled, fully electronic ignition system with digital ignition timing adjustment, type Kokusan | Continental EMS |
| Starter | Electric | Electric & kick |
| Drivetrain |
| Clutch | Wet multi-disc clutch, mechanically actuated | Wet multi-plate clutch, Brembo hydraulics |
| Final Drive | Chain (final drive) | Chain (final drive) |
| Gearbox | 6-speed | 6-speed |
| Primary Drive | 5/8 x 1/4 (520) O Ring. Primary drive: 22:72. | X-Ring 5/8 x 1/4´ chain |
| Chassis |
| Frame Type | Central double-cradle | Central double-cradle-type 25CrMo4 steel |
| Suspension - Front | WP upside-down Ø 48 mm | WP XPlor 48 upside-down fork |
| Suspension - Rear | WP Monoshock | WP Xplor PDS shock absorber |
| Rake | - | 26.5° |
| Wheel Travel - Front | - | 300 mm / 11.8 in. |
| Wheel Travel - Rear | 150 mm / 5.9 in. | 310 mm / 12.2 in. |
| Wheels & Brakes |
| Brakes - Front | Single disc | Single disc. Brembo twin-piston floating calliper |
| Brakes - Rear | Single disc | Single disc. Brembo single-piston floating calliper |
| Tyres - Front | 110-17 | - |
Verdict
🏆
Winner on specs
2021 KTM 150 XC-W TPI
The 2021 KTM 150 XC-W TPI edges out the 2020 KTM 125 SX thanks to its higher rear wheel travel. Specifications are one part of the picture - dealer support, parts availability, and intended use all matter too.
Key Differences
2020 KTM 125 SX - Advantages
- ✓Competitive all-round: The 2020 KTM 125 SX matches or exceeds its rival across all measured criteria.
2021 KTM 150 XC-W TPI - Advantages
- 🔄More rear wheel travel: 310 mm vs 150 mm - absorbs bigger hits and rough terrain better.
2020 KTM 125 SX vs 2021 KTM 150 XC-W TPI - FAQs
Which should I buy, the 2020 KTM 125 SX or the 2021 KTM 150 XC-W TPI?
Both are strong choices. The 2020 KTM 125 SX has its own strengths, while the 2021 KTM 150 XC-W TPI stands out for higher rear wheel travel. Visit dealers, arrange test rides, and factor in local parts and service costs - these often matter as much as the spec sheet.