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Enduro Bikes

2021KTM 125 XC

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The 2021 KTM 125 XC is a lightweight enduro bike designed for young riders and beginners seeking an accessible entry point into off-road racing. Its agile 124.8cc two-stroke engine delivers manageable power while the compact, nimble chassis excels in technical terrain. Known for its reliability and competitive pricing, this model is ideal for learning fundamental dirt bike skills.

Capacity
124.8 ccm
Engine
Single, two-stroke
Gearbox
6-speed
Dry weight
89.0 kg
Seat height
850 mm
Power
15.0 HP (10.9 kW)
⇄ Compare with another bike + Add to garage All model years
Other years 2021 2022 2023 2024 2025 2026 2027

How it rides

Editorial estimate from the spec sheet - not lab tested
Speed 25Agility 90Comfort 35Off-road 97Touring 15Road manners 20
Off-road & trail97%
Cornering60%
City riding10%
Daily riding10%
Touring10%
Two-up5%
Track20%
Best for
Built purely for cross-country enduro riding, tight trails, and technical terrain rather than any road-going use.
Built for
A raw, high-revving two-stroke enduro weapon that feels playful, sharp, and eager to be flicked between obstacles.
Not ideal for
Not for anyone wanting a comfortable commuter, a passenger-friendly bike, or sustained highway and touring capability.

Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.

Will it fit you?

Worked out in your browser - nothing is sent to us
At 850mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with tip-toe one foot on the 2021 KTM 125 XC, with a cramped knee angle of around 75 degrees and a slightly forward riding position.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

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Full specifications

Engine
Capacity
124.8 ccm
Power
15.0 HP (10.9 kW)
Engine type
Single, two-stroke
Power/weight ratio
0.1685 HP/kg (dry)
Bore x stroke
54.0 x 54.5 mm
Cooling system
Liquid
Fuel system
Injection
Starting
Kick
Ignition
Kokusan EMS
Lubrication system
Wet sump
Torque
Not on record - add it
Transmission
Gearbox
6-speed
Transmission type
Manual
Final drive
Chain
Clutch
Multi-plate clutch, Brembo hydraulics
Dimensions & weight
Wheelbase
1493 mm
Seat height
850 mm
Dry weight
89.0 kg
Fuel capacity
7.50 litres
Ground clearance
375 mm
Chassis & suspension
Frame
Central double-cradle-type 25CrMo4 steel
Front suspension
WP XACT-USD, Ø 48 mm
Rear suspension
WP XACT Monoshock with linkage
Front wheel travel
310 mm
Rear wheel travel
300 mm
Rake (fork angle)
26.1°
Brakes & wheels
Front brakes
Single disc
Front brakes diameter
260 mm
Rear brakes
Single disc
Front tyre
110-17
Rear tyre
150-17
Other
Color options
White/orange/black

Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.

What changed, year to year

Differences highlighted
Specification 20212023202420262027
Capacity 125 cc 125 cc 125 cc 125 cc 125 cc
Dry weight 89 kg 89 kg 89 kg 95 kg 95 kg
Seat height 850 mm 850 mm 850 mm 954 mm 954 mm
Fuel capacity 7.5 L 8.5 L 8.5 L 9 L 9 L

Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.

Rider Reviews

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MotorcycleDB

The 2021 KTM 125 XC is a top-of-the-line off-road motorcycle designed for intense performance and durability. Equipped with a powerful 125cc engine, this bike delivers impressive power and torque, making it a popular choice for competitive racing. The lightweight chassis and advanced suspension system provide excellent handling and maneuverability, allowing riders to tackle rough and technical terrain with ease. With its high-quality components and precision engineering, the KTM 125 XC offers a thrilling ride for adrenaline-seeking riders.

Overall, the 2021 KTM 125 XC is a formidable off-road motorcycle that delivers impressive performance and handling. Its powerful engine, lightweight chassis, and advanced suspension make it a top choice for riders looking for a competitive edge in off-road racing. With its combination of power, agility, and durability, the KTM 125 XC is a standout option in the world of off-road motorcycles.

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Common questions

What is the engine size of the KTM 125 XC?

The 2021 KTM 125 XC has a Capacity of 124.8 ccm (7.62 cubic inches).

What engine power does the KTM 125 XC have?

The 2021 KTM 125 XC has a Power of 15.0 HP (10.9 kW).

How many gears does the KTM 125 XC have?

The 2021 KTM 125 XC has a Gearbox of 6-speed.

How much does the KTM 125 XC weigh?

The 2021 KTM 125 XC has a Dry weight of 89.0 kg (196.2 pounds).

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