1981Moto Morini 3 1/2 S
19 fields on record
The 1981 Moto Morini 3 1/2 S is a lightweight 344cc V-twin allrounder suited for everyday riders seeking simplicity and efficiency. Known for its compact dimensions, manageable weight of 160kg, and approachable 27hp power output, it excels as an economical commuter and weekend runabout. Its air-cooled OHV engine and six-speed transmission deliver predictable, user-friendly performance.
- Capacity
- 344.0 ccm
- Engine
- V-Twin
- Gearbox
- 6-speed
- Wet weight
- 160.0 kg
- Seat height
- Not on record
Know it? Add it → - Power
- 27.0 HP (19.9 kW) @ 6850 RPM
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Best suited to spirited backroad riding and short sporty jaunts rather than outright speed or long-distance touring.
- Built for
- A charming, mechanically simple 1980s Italian V-twin with modest power but an engaging, nimble feel typical of small sport bikes of its era.
- Not ideal for
- Not a good fit for riders seeking high top speed, modern touring comfort, or serious two-up or off-road capability.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Engine
- Capacity
- 344.0 ccm
- Power
- 27.0 HP (19.9 kW) @ 6850 RPM
- Engine type
- V-Twin
- Power/weight ratio
- 0.1688 HP/kg (wet)
- Bore x stroke
- 62.0 x 57.0 mm
- Compression
- 10.0:1
- Cooling system
- Air
- Valves per cylinder
- 2
- Torque
- Not on record - add it
Transmission
- Gearbox
- 6-speed
- Transmission type
- Manual
- Final drive
- Chain
Performance
- Top speed
- 155.0 km/h (96.3 mph)
Dimensions & weight
Brakes & wheels
- Front brakes
- Single disc
- Rear brakes
- Expanding brake
- Front tyre
- 3.25-18
- Rear tyre
- 4.10-18
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 | 1980 | 1981 | 1982 | 1983 |
|---|---|---|---|---|
| Capacity | 344 cc | 344 cc | 344 cc | 344 cc |
| Fuel capacity | 13 L | 13 L | 13 L | 13 L |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Rider Reviews
Common questions
What is the engine size of the Moto Morini 3 1/2 S?
The 1981 Moto Morini 3 1/2 S has a Capacity of 344.0 ccm (20.99 cubic inches).
What engine power does the Moto Morini 3 1/2 S have?
The 1981 Moto Morini 3 1/2 S has a Power of 27.0 HP (19.9 kW) @ 6850 RPM.
How many gears does the Moto Morini 3 1/2 S have?
The 1981 Moto Morini 3 1/2 S has a Gearbox of 6-speed.
How much does the Moto Morini 3 1/2 S weigh?
The 1981 Moto Morini 3 1/2 S has a Wet weight of 160.0 kg (352.7 pounds).
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