KTM 125 SX (2005-2007) Specs, Performance & Photos
Updated: 12 May 2021 • Maintained by:
Segment: Enduro/Offroad
Production years: 2005, 2006, 2007
2 Photos
KTM has been serious about 125 cc-class motocross, and this dedication has manifested in the 125 SX for several years now. The changes made by KTM put in production for 2005 have resulted in a greatly improved orange machine. As far as the engine is concerned, KTM left a good thing pretty much alone. It was the most-powerful 125 of 2004 and we expect that to be true in 2005.
KTM 125 SX 2005-2007
KTM 125 SX 125
| engine specs | Type: | Single cylinder, 2-stroke, liquid cooled | Displacement: | 124.8 cm3 | Bore X Stroke: | 2.13x2.15 in OR 54 mm | Compression Ratio: | 12.0:1 | Horsepower: | 13.5/8400 KW(hp)/RPM | Torque: | 10/7500 lb-ft/RPM OR 14/7500 Nm/RPM | Fuel System: | Keihin PWK 39 Carburetor |
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| transmission specs | Gearbox: | 6-Speed | Clutch: | Wet multidisc clutch, operated hydraulically | Primary Drive: | 23:73 | Final Drive: | Chain |
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| chassis specs | Frame: | Central double cradle type 25 CrMo4 | Front Suspension: | WP-USD 48 mm | Rear Suspension: | WP-PDS shock absorber | Front Brake: | Disc 260 mm | Rear Brake: | Disc 220 mm |
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| dimension specs | Overall Length: | - | Overall Width: | - | Seat Height: | 36.4 in OR 925 mm | Wheelbase: | 57.9 in OR 1471 mm | Ground Clearance: | 15.4 in OR 391 mm | Weight: | 204 lbs OR 93 kg | Fuel Capacity: | 2 gallons OR 7.6 L |
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| tyres specs | Front: | 80/100-21 | Rear: | 100/90-19 |
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| power system specs | Power pack: | - | Nominal Capacity: | - | Maximum Capacity: | - | Charger type: | - | Charging time (normal): | - | Charging time (quick): | - | Range: | - |
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