Motocross Bikes
2003KTM 50 Junior Adventure
22 fields on record
The 2003 KTM 50 Junior Adventure is an affordable motocross bike for riders who want competitive off-road and track performance. Its 50cc air-cooled single makes 5.4 hp, with a 585 mm seat, a 38 kg dry weight and a 2-litre tank.
- Capacity
- 49.8 ccm
- Engine
- Single, two-stroke
- Gearbox
- Not on record
Know it? Add it → - Dry weight
- 38.2 kg
- Seat height
- 585 mm
- Power
- 5.4 HP (4.0 kW)
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built for off-road and motocross-style riding on tracks and closed terrain rather than public roads.
- Built for
- A motocross bike from KTM with a 50cc engine; its character is easy-going and economical, with 5 hp on tap.
- Not ideal for
- Not road-legal in most markets and not for commuting or touring.
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 usEngine
- Capacity
- 49.8 ccm
- Power
- 5.4 HP (4.0 kW)
- Engine type
- Single, two-stroke
- Power/weight ratio
- 0.1414 HP/kg (dry)
- Bore x stroke
- 39.5 x 40.0 mm
- Cooling system
- Air
- Fuel system
- Carburettor
- Torque
- Not on record - add it
Transmission
- Final drive
- Chain
Dimensions & weight
- Wheelbase
- 910 mm
- Seat height
- 585 mm
- Dry weight
- 38.2 kg
- Fuel capacity
- 2.00 litres
- Ground clearance
- 220 mm
Chassis & suspension
- Front wheel travel
- 140 mm
- Rear wheel travel
- 205 mm
Brakes & wheels
- Front brakes
- Expanding brake (drum brake)
- Front brakes diameter
- 90 mm
- Rear brakes
- Expanding brake (drum brake)
- Rear brakes diameter
- 90 mm
- Front tyre
- 2.50-10
- Rear tyre
- 2.50-10
Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.
Rider Reviews
Common questions
What is the engine size of the KTM 50 Junior Adventure?
The 2003 KTM 50 Junior Adventure has a Capacity of 49.8 ccm (3.04 cubic inches).
What engine power does the KTM 50 Junior Adventure have?
The 2003 KTM 50 Junior Adventure has a Power of 5.4 HP (4.0 kW).
How much does the KTM 50 Junior Adventure weigh?
The 2003 KTM 50 Junior Adventure has a Dry weight of 38.2 kg (84.2 pounds).
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