| KTM's profilation of this bike |
| The 125 SX has long since established itself as the undisputed top dog above all in junior race series and as a springboard to the professional leagues. Powered by a high-performance 2-stroke engine with exhaust control system and 6-speed transmission, the 125 SX has been further improved for the 2015 model year, ensuring it will maintain its popularity with young champions in future. |
| General information |
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| Model: | KTM 125 SX |
| Year: | 2015 |
| Category: | Cross / motocross |
| Rating: | 54 out of 100. Show full rating and compare with other bikes |
| Engine and transmission |
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| Displacement: | 124.80 ccm (7.62 cubic inches) |
| Engine type: | Single cylinder, two-stroke |
| Engine details: | Reed intake. |
| Bore x stroke: | 54.0 x 54.5 mm (2.1 x 2.1 inches) |
| Fuel system: | Carburettor |
| Ignition: | Contactless, controlled, fully electronic ignition system with digital ignition timing adjustment, type Kokusan |
| Cooling system: | Liquid |
| Gearbox: | 6-speed |
Transmission type,
final drive: | Chain |
| Clutch: | Wet multi-disc clutch, hydraulically operated |
| Driveline: | 13:50. Primary drive: 23:73. |
| Chassis, suspension, brakes and wheels |
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| Frame type: | Central tube frame made of chrome molybdenum steel tubing |
| Rake (fork angle): | 26.5° |
| Front suspension: | WP Suspension Up Side Down 4860 MXMA CC |
| Front wheel travel: | 300 mm (11.8 inches) |
| Rear suspension: | WP Suspension 5018 BAVP DCC |
| Rear wheel travel: | 317 mm (12.5 inches) |
| Front brakes: | Single disc. Brake calipers on floating bearings |
| Front brakes diameter: | 260 mm (10.2 inches) |
| Rear brakes: | Single disc. Brake calipers on floating bearings |
| Rear brakes diameter: | 220 mm (8.7 inches) |
| Physical measures and capacities |
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| Dry weight: | 90.8 kg (200.2 pounds) |
| Seat height: | 992 mm (39.1 inches) If adjustable, lowest setting. |
| Ground clearance: | 395 mm (15.6 inches) |
| Wheelbase: | 1,480 mm (58.3 inches) |
| Fuel capacity: | 7.50 litres (1.98 gallons) |
| Other specifications |
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| Color options: | Orange/black |
| Starter: | Kick |
| Further information |
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| Insurance costs | Get a US insurance quote from Progressive. |
| Parts finder |
Chaparral provides online schematics & OEM parts for the US.
2Wheels offers first time 2Wheels buyers $10.00 off now. Same day shipment to the US.
Also check out our overview of motorcycle webshops at Bikez.info. |
| Motocross parts | Parts and accessories available from Revzilla Motocross . Ships to most countries. |
| Ask questions | Join the 15 KTM 125 SX discussion group or the general KTM discussion group. |
| Related bikes | List related bikes for comparison of specs. |
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Technical issues with this bike
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(62.2 out of 100)