Engineered by Ksr for the scooter motorcycle segment, the 2019 Ksr Sirion 50 relies on a 49 cc (3 cu in) air-cooled single cylinder, four-stroke powerplant. In factory specification, peak output is rated at 3.1 HP (2.2 kW) at 7,500 rpm, transferring power to the rear wheel through a automatic gearbox and belt final drive.
On the scales, the Sirion 50 measures 95 kg (209 lbs) dry. Rider ergonomics and chassis geometry center around a 1,300 mm (51.2 in) wheelbase engineered for quick, flickable steering geometry. The 5.5-liter (1.5 US gal) fuel tank paired with a rated consumption of 2 L/100 km provides an estimated theoretical range of roughly 275 km (171 miles) between fill-ups.
Within MotoLibrary's Ksr archive, this model family spans 3 indexed model years from 2017 to 2021, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Theoretical Range
~275 km (171 mi)
Engine
Displacement49.0 ccm (2.99 cubic inches)
Engine TypeSingle cylinder, four-stroke
Power3.1 HP (2.2 kW)) @ 7500 RPM
Fuel SystemCarburettor
CoolingAir
Transmission
GearboxAutomatic
Final DriveBelt (final drive)
DrivelineCVT
Performance
Fuel Consumption2.00 litres/100 km (50.0 km/l or 117.61 mpg)
Greenhouse Gases46.4 CO2 g/km. (CO2 - Carbon dioxide emission)
Emission DetailsEuro 4
Chassis
Front SuspensionTelescopic fork
Rear SuspensionMonoshock
Wheelbase1300 mm (51.2 inches)
Wheels & Brakes
Front Tyre120/70-12
Rear Tyre130/70-12
Front BrakesSingle disc
Rear BrakesExpanding brake (drum brake)
Dimensions & Weight
Dry Weight95.0 kg (209.4 pounds)
Power/Weight0.0324 HP/kg
Overall Height1140 mm (44.9 inches)
Overall Length1895 mm (74.6 inches)
Overall Width720 mm (28.3 inches)
Fuel Capacity5.50 litres (1.45 US gallons)
Other
StarterElectric & kick
Color OptionsRed, Grey
Notes
Sold in Austria, Belgium, Croatia, Cyprus, Czech Republic, Finland, France, Germany, Greece, Italy, FYR Macedonia, Malta, Slovakia.
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.
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.
