The powerplant of the Katana is a two-stroke engine with a displacement of 49 cubic centimetres producing 2.43 kW. Being just below 50 cm3, it is regarded as a moped in most countries. In addition to the air-cooled AY50, a liquid-cooled version designated the AY50R is produced.
The engine of the AY50 is also used in the Suzuki Estilete UF50 and Zillion UX50.
As with most popular scooters and mopeds, many aftermarket modifications and replacement parts to increase acceleration and top speed exist. However, tuning of 50 cm3 vehicles is illegal in most countries.
Katana AY50 (air-cooled)
- Capacity: 2; rider and passenger
- Dimensions: 650 × 1890 mm
- Wheelbase: 1200 mm
- Weight: 91 kg
- Seat height: 790 mm
- Displacement: 49 cm3
- Power: 2.43 kW @ 9000 rpm
- Power-to-weight ratio: 0.027 kW/kg
- Torque: 3.2 N·m @ 5.500 rpm
- Transmission: Continuously variable
- Noise: 84 dB @ 4500 rpm
- Starter: Kick and electric
- Fuel: Unleaded petrol, 6 litre capacity
- Front tyre: 120/70-12
- Rear tyre: 130/70-12
- Rim dimension: 3.5"
- Front brakes: Disc
- Rear brakes: Drum
- Front suspension: Inverted Showa forks
