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KTM 125 SX - 2021 Specifications and Reviews

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General information

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CategoryEnduro / offroad
Year2021
ModelKTM 125 SX
 
 

Engine and Transmission Specifications

Driveline5/8  x  1/4 (520) O Ring. Primary drive: 22:72.
ClutchMulti-plate clutch, Brembo hydraulics
Transmission typeChain   (final drive)
Gearbox6-speed
Cooling systemLiquid
Lubrication systemWet sump
IgnitionKokusan EMS
Fuel controlDouble Overhead Cams/Twin Cam (DOHC)
Fuel systemInjection
Bore x Stroke54.0 x 54.5 mm (2.1 x 2.1 inches)
Power15.0 Horsepower">HP (10.9 Kilowatt">kW))
Engine typeSingle cylinder, two-stroke
Capacity:124.8 ccm (7.62 cubic inches)

Brakes, suspension, Frame and wheels

Rear brakesSingle disc
Diameter260 mm (10.2 inches)
Front brakesSingle disc
Rear tire150-17
Front tire110-17
Rear wheel travel300 mm (11.8 inches)
Rear SuspensionWP XACT Monoshock with linkage
Front wheel travel310 mm (12.2 inches)
Front SuspensionWP XACT-USD, Ø 48 mm
Rake (fork angle)26.1°
Frame typeCentral double-cradle-type 25CrMo4 steel

Physical measures and capacities

Fuel capacity7.50 litres (1.98 US gallons)
Ground clearance375 mm (14.8 inches)
Seat height850 mm (33.5 inches) If adjustable, lowest setting.
Power/weight ratio0.1714 HP/kg
Dry weight87.5 kg (192.9 pounds)
 
 

Other specs

StarterKick
Color optionsWhite/Orange

Rider Reviews

Total comments: 1
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MotorcycleDB Review

The 2021 KTM 125 SX is a powerful and lightweight motocross bike that is perfect for riders looking to take their skills to the next level. With its high-performance engine and race-ready suspension, this bike offers unmatched agility and control on the track. The top-of-the-line components and advanced technology make this motorcycle a top choice for competitive riders who demand the best performance from their machine. Whether you're a seasoned pro or a novice rider, the KTM 125 SX delivers an exhilarating and responsive riding experience that is sure to impress. In conclusion, the 2021 KTM 125 SX is a top-of-the-line motocross bike that offers exceptional performance and handling. With its powerful engine and race-ready suspension, this motorcycle is a top choice for competitive riders looking to push their limits on the track. Whether you're a seasoned pro or a novice rider, the KTM 125 SX delivers an exhilarating and responsive riding experience that is sure to impress. If you're looking for a high-performance motocross bike that delivers unmatched agility and control, the 2021 KTM 125 SX is the perfect choice for you.
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