Enduro Bikes
1981Cagiva SX 125
18 fields on record
The 1981 Cagiva SX 125 is a lightweight single-cylinder dirt bike designed for novice and amateur off-road riders. Known for its nimble handling and manageable 17 hp output, this air-cooled two-stroke excels in trail riding and recreational use. Its 120 kg weight and compact proportions make it ideal for developing fundamental dirt biking skills.
- Capacity
- 125.0 ccm
- Engine
- Single
- Gearbox
- 6-speed
- Wet weight
- 120.0 kg
- Seat height
- Not on record
Know it? Add it → - Power
- 17.0 HP (12.5 kW)
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built as an early-80s enduro/trail machine, it was designed for light off-road use and casual trail riding rather than sustained speed or highway travel.
- Built for
- A nimble, buzzy little two-stroke with old-school charm, rewarding riders who enjoy revving a small engine hard and tossing a light bike through tight trails.
- Not ideal for
- It is not suited for riders wanting modern comfort, passenger carrying, high-speed touring, or serious braking performance.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Engine
- Capacity
- 125.0 ccm
- Power
- 17.0 HP (12.5 kW)
- Engine type
- Single
- Power/weight ratio
- 0.1417 HP/kg (wet)
- Bore x stroke
- 56.0 x 50.6 mm
- Compression
- 12.1:1
- Cooling system
- Air
- Torque
- Not on record - add it
Transmission
- Gearbox
- 6-speed
- Transmission type
- Manual
- Final drive
- Chain
Performance
- Top speed
- 100.0 km/h (62.1 mph)
Dimensions & weight
Brakes & wheels
- Front brakes
- Expanding brake
- Rear brakes
- Expanding brake
- Front tyre
- 2.75-21
- Rear tyre
- 3.50-18
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 Cagiva SX 125?
The 1981 Cagiva SX 125 has a Capacity of 125.0 ccm (7.63 cubic inches).
What engine power does the Cagiva SX 125 have?
The 1981 Cagiva SX 125 has a Power of 17.0 HP (12.5 kW).
How many gears does the Cagiva SX 125 have?
The 1981 Cagiva SX 125 has a Gearbox of 6-speed.
How much does the Cagiva SX 125 weigh?
The 1981 Cagiva SX 125 has a Wet weight of 120.0 kg (264.6 pounds).
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