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| KTM's profilation of this bike |
| Ultra light, mega agile and with its new cylinder, even stronger than before. With its completely new chassis and the newly designed plastics the 125 SX is the ultimate bike for all MX2 racers who find the four valve technology of a four-stroke too complex. |
| General information |
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| Model: | KTM 125 SX | | Year: | 2007 | | Category: | Cross / motocross | | Rating: | 77.1 out of 100. Show full rating and compare with other bikes | | Safety: | See our safety campaign with the high safety rated bikes in this category.
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| Engine and transmission |
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| Displacement: | 124.80 ccm (7.62 cubic inches) | | Engine type: | Single cylinder | | Stroke: | 2 | | Bore x stroke: | 54.0 x 54.5 mm (2.1 x 2.1 inches) | | Fuel system: | Carburettor. Keihin PWK 39 | | Ignition: | Kokusan digital 2K-1 | | Starter: | Kick | | Lubrication system: | Mixture oil lubrication 1:40 | | Cooling system: | Liquid | | Gearbox: | 6-speed | Transmission type
final drive: | Chain | | Clutch: | Wet multi-disc clutch, operated hydraulically | | Physical measures |
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| Dry weight: | 92.4 kg (203.7 pounds) | | Seat height: | 925 mm (36.4 inches) If adjustable, lowest setting. | | Ground clearance: | 390 mm (15.4 inches) | | Wheelbase: | 1,417 mm (55.8 inches) | | Chassis and dimensions |
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| Frame type: | Central double-cradle-type 25CrMo4 | | Rake (fork angle): | 27.0° | | Front suspension: | WP USD, 43 mm | | Front suspension travel: | 115 mm (4.5 inches) | | Rear suspension: | WP monoshock PDS | | Rear suspension travel: | 185 mm (7.3 inches) | | Front tyre dimensions: | 80/100-21 | | Rear tyre dimensions: | 100/90-19 | | Front brakes: | Single disc | | Rear brakes: | Single disc | | Exhaust system: | Aluminium | | Speed and acceleration |
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| Other specifications |
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| Fuel capacity: | 7.50 litres (1.98 gallons) | | Further information |
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| Parts and accessories | Check out parts and accessories from our partners.  |
| Ask questions | Join the 07 KTM 125 SX discussion group,
the new KTM forum at Bikez.name or
the new Cross / motocross forum at Bikez.name. |
| Insurance, loans, tests
| Check out insurance here. Search the web for dealers, loan costs, tests, customizing, etc. |
| Related bikes | List related bikes for comparison of specs |
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(74.6 out of 100)