Motocross Bikes
2007Lem CX3 SR
20 fields on record
The 2007 Lem CX3 SR is a lightweight 50cc cross-style motorcycle designed for young riders and beginners seeking an affordable entry into off-road riding. Powered by a simple air-cooled single-cylinder engine with electric and kick starting, it combines durability with easy maintenance. Its compact size and automatic-style single-speed transmission make it ideal for learning basic motocross skills.
- Capacity
- 49.8 ccm
- Engine
- Single
- Gearbox
- 1-speed
- Dry weight
- 49.9 kg
- Seat height
- Not on record
Know it? Add it → - Power
- 7.0 HP (5.1 kW)
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- It is designed as a small-capacity youth motocross-style trainer for supervised practice on dirt tracks, not for serious competition or road use.
- Built for
- The single-speed 50cc air-cooled engine and simple chassis give it a playful, low-stakes character focused on learning throttle and balance control rather than outright performance.
- Not ideal for
- It is not suitable for adult touring, highway riding, passenger carrying, or riders seeking real speed or long-distance comfort.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Engine
- Capacity
- 49.8 ccm
- Power
- 7.0 HP (5.1 kW)
- Engine type
- Single
- Power/weight ratio
- 0.1403 HP/kg (dry)
- Cooling system
- Air
- Fuel system
- Injection
- Starting
- Electric & kick
- Ignition
- flywheel magneto with coil
Transmission
- Gearbox
- 1-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- wet clutch
Dimensions & weight
Chassis & suspension
- Frame
- steel tubes with alluminium swing-armi brake pedal and rear body
- Rear suspension
- Monoshock
- Rake (fork angle)
- 7.3°
Brakes & wheels
- Front brakes
- Double disc
- Rear brakes
- Single disc
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 Lem CX3 SR?
The 2007 Lem CX3 SR has a Capacity of 49.8 ccm (3.04 cubic inches).
What engine power does the Lem CX3 SR have?
The 2007 Lem CX3 SR has a Power of 7.0 HP (5.1 kW).
How many gears does the Lem CX3 SR have?
The 2007 Lem CX3 SR has a Gearbox of 1-speed.
How much does the Lem CX3 SR weigh?
The 2007 Lem CX3 SR has a Dry weight of 49.9 kg (110.0 pounds).
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