Engineered by Diamo for the scooter motorcycle segment, the 2005 Diamo Retro relies on a 150 cc (9.2 cu in) air-cooled single cylinder, four-stroke powerplant. In factory specification, peak output is rated at 9.8 HP (7.2 kW). With a specific output of 65.3 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 Retro measures 94.8 kg (209 lbs) dry, translating to a power-to-weight ratio of 0.1 HP/kg (9.67 kg per horsepower). Rider ergonomics and chassis geometry center around a 737 mm (29 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,270 mm (50 in) wheelbase engineered for quick, flickable steering geometry. The 7.57-liter (2 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 105 km/h (65 mph).
Specific Output
65.3 HP/L
Power-to-Weight
0.1 HP/kg (9.67 kg/HP)
Standover Height
737 mm (29 in)
Engine
Displacement150.0 ccm (9.15 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Power9.8 HP (7.2 kW))
Fuel SystemCarburettor. Keihin
CoolingAir
Performance
Top Speed104.6 km/h (65.0 mph)
Chassis
Front SuspensionKymco Front Dual Shock
Rear SuspensionRear Mono Shock
Wheelbase1270 mm (50.0 inches)
Wheels & Brakes
Front Tyre130/60-13
Rear Tyre130/60-13
Front BrakesSingle disc
Rear BrakesExpanding brake (drum brake)
Dimensions & Weight
Dry Weight94.8 kg (209.0 pounds)
Power/Weight0.1034 HP/kg
Seat Height737 mm (29.0 inches) If adjustable, lowest setting.
Overall Height1118 mm (44.0 inches)
Overall Length1778 mm (70.0 inches)
Overall Width686 mm (27.0 inches)
Fuel Capacity7.57 litres (2.00 US gallons)
Other
StarterElectric & kick
Color OptionsRed, Silver, Metallic Blue, Purple, Orange, Yellow
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.
