22 June. Monday 2026
KTM 125 SX - 2007 Specifications and Reviews
The 2007 KTM 125 SX is a lightweight two-stroke motocross bike designed for young riders and beginners entering competitive racing. Its compact 125cc single-cylinder engine delivers sharp power delivery and nimble handling ideal for learning fundamental dirt bike skills. Known for its durability and aggressive styling, the 125 SX established itself as a popular entry-level platform in amateur motocross competition.
General information | |
| Category | Cross / motocross |
| Year | 2007 |
| Model | KTM 125 SX |
| | |
Engine and Transmission Specifications | |
| Clutch | Wet multi-disc clutch, operated hydraulically |
| Transmission typefinal drive | Chain |
| Gearbox | 6-speed |
| Cooling system | Liquid |
| Lubrication system | Mixture oil lubrication 1:40 |
| Starter | Kick |
| Ignition | Kokusan digital 2K-1 |
| Fuel system | Carburettor. Keihin PWK 39 |
| Bore x stroke | 54.0 x 54.5 mm (2.1 x 2.1 inches) |
| Stroke | 2 |
| Engine type | Single cylinder |
| Capacity: | 124.80 ccm (7.62 cubic inches) |
| | |
Physical measures and capacities | |
| Wheelbase | 1,417 mm (55.8 inches) |
| Ground clearance | 390 mm (15.4 inches) |
| Seat height | 925 mm (36.4 inches) If adjustable, lowest setting. |
| Dry weight | 92.4 kg (203.7 pounds) |
KTM 125 SX dimensions and frame | |
| Exhaust system | Aluminium |
| Rear brakes | Single disc |
| Front brakes | Single disc |
| Rear tyre dimensions | 100/90-19 |
| Front tyre dimensions | 80/100-21 |
| Rear suspension travel | 185 mm (7.3 inches) |
| Rear suspension | WP monoshock PDS |
| Front suspension travel | 115 mm (4.5 inches) |
| Front suspension | WP USD, 43 mm |
| Rake (fork angle) | 27.0° |
| Frame type | Central double-cradle-type 25CrMo4 |
Speed and acceleration | |
| Fuel capacity | 7.50 litres (1.98 gallons) |
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