Moto Morini 400 S - 1984 Specifications and Reviews

The 1984 Moto Morini 400 S is a lightweight middleweight V-twin designed for riders seeking nimble, accessible performance. Its 37-horsepower air-cooled engine and 156 kg weight deliver responsive handling and excellent maneuverability, making it ideal for commuting and spirited riding. Known for its Italian character and reliable 6-speed transmission, this model appeals to enthusiasts valuing agility over outright power.

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General information

CategoryUnspecified category
Year1984
ModelMoto Morini 400 S

Engine and Transmission Specifications

Transmission typefinal driveChain
Gearbox6-speed
Cooling systemAir
Fuel controlOHV
Valves per cylinder2
Bore x stroke66.5 x 57.0 mm (2.6 x 2.2 inches)
Compression11.0:1
Power37.00
Stroke4
Engine typeV2
Capacity:396.00 ccm (24.16 cubic inches)
 
 

Physical measures and capacities

Weight incl. oil, gas, etc156.0 kg (343.9 pounds)

Moto Morini 400 S dimensions and frame

Rear brakesSingle disc
Front brakesDual disc
Rear tyre dimensions3.50-18
Front tyre dimensions100/90-18

Speed and acceleration

Top speed165.0 km/h (102.5 mph)
 
 

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
Fuel capacity15.00 litres (3.96 gallons)

Performance Profile & Rider Fit

37 hp
Peak Power
7.5s
0-60 mph
102.5 mph
Top Speed

Best For

Track40%
City68%
Cornering72%
Daily Riding60%
Touring42%
Passenger35%

Rider Profile

Best ForSuits riders with some prior experience who appreciate a small, characterful V2 rather than outright performance.
PurposeBest suited to spirited backroad rides, commuting, and classic-bike enjoyment rather than high-speed touring or racing.
Rider FitIts light weight of around 156 kg and low seat height make it manageable for riders of average or smaller stature.
CharacterA charming, revvy air-cooled V-twin with a 6-speed gearbox that rewards riding it at moderate speeds with enthusiasm.
Not Ideal ForNot the right choice for riders wanting high top speed, long-distance comfort, or any off-road capability.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Reviews

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