Engineered by Diamo for the atv motorcycle segment, the 2009 Diamo Storm 300 utilizes a 299 cc (18.2 cu in) liquid-cooled single cylinder, four-stroke layout. In factory specification, peak output is rated at 21.6 HP (15.8 kW) at 8,000 rpm, transferring power to the rear wheel through a 4-speed gearbox and belt final drive. With a specific output of 72.2 HP per liter, the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.
On the scales, the Storm 300 measures 199.6 kg (440 lbs) dry, translating to a power-to-weight ratio of 0.11 HP/kg (9.24 kg per horsepower). Rider ergonomics and chassis geometry center around a 1 mm (0 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops. The 8.7-liter (2.3 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Specific Output
72.2 HP/L
Power-to-Weight
0.11 HP/kg (9.24 kg/HP)
Standover Height
1 mm (0 in)
Engine
Displacement299.0 ccm (18.24 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Power21.6 HP (15.8 kW)) @ 8000 RPM
Fuel SystemCarburettor
CoolingLiquid
Transmission
Gearbox4-speed
Final DriveBelt (final drive)
Chassis
Front SuspensionIndependent
Rear SuspensionIndependent
Wheels & Brakes
Front Tyre22/7-10
Rear Tyre22/10-10
Front BrakesSingle disc
Rear BrakesSingle disc
Dimensions & Weight
Dry Weight199.6 kg (440.0 pounds)
Power/Weight0.1082 HP/kg
Seat Height1,143 mm (45.0 inches) If adjustable, lowest setting.
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
