Scooters
2018KSR Sirion 50
23 fields on record
The 2018 KSR Sirion 50 is a simple moped-class scooter from the Austrian brand KSR. Its air-cooled 49cc two-stroke single makes 3.9 hp at 5,750 rpm through an automatic belt transmission. A 92 kg dry weight and a 5-litre tank make it a light, low-cost city runabout.
- Capacity
- 49.0 ccm
- Engine
- Single, two-stroke
- Gearbox
- Not on record
Know it? Add it → - Dry weight
- 92.0 kg
- Seat height
- Not on record
Know it? Add it → - Power
- 3.9 HP (2.8 kW) @ 5750 RPM
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built purely for short urban hops, errands, and light commuting at low speeds.
- Built for
- A humble, economical 50cc scooter that prioritizes simplicity, fuel efficiency, and easy city maneuverability over performance.
- Not ideal for
- Not suitable for highway riding, long-distance touring, carrying a passenger comfortably, or anyone seeking speed and power.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Engine
- Capacity
- 49.0 ccm
- Power
- 3.9 HP (2.8 kW) @ 5750 RPM
- Engine type
- Single, two-stroke
- Power/weight ratio
- 0.0424 HP/kg (dry)
- Cooling system
- Air
- Fuel system
- Carburettor
- Starting
- Electric & kick
Transmission
- Transmission type
- Automatic
- Final drive
- Belt
Dimensions & weight
- Wheelbase
- 1280 mm
- Overall length
- 1840 mm
- Overall width
- 690 mm
- Overall height
- 1170 mm
- Dry weight
- 92.0 kg
- Fuel capacity
- 5.00 litres
- Seat height
- Not on record - add it
Chassis & suspension
- Front suspension
- Telescopic fork
- Rear suspension
- Monoshock
Brakes & wheels
- Front brakes
- Single disc
- Rear brakes
- Expanding brake (drum brake)
- Front tyre
- 120/70-12
- Rear tyre
- 130/70-12
Other
- Color options
- White, Red, Grey, Black
Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.
What changed, year to year
Differences highlighted| Specification | 2017 | 2018 | 2019 | 2020 | 2021 |
|---|---|---|---|---|---|
| Capacity | 49 cc | 49 cc | 49 cc | 49 cc | 50 cc |
| Dry weight | 92 kg | 92 kg | 95 kg | 95 kg | 95 kg |
| Fuel capacity | 5 L | 5 L | 5.5 L | 5.5 L | 5.5 L |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Rider Reviews
Common questions
What is the engine size of the KSR Sirion 50?
The 2018 KSR Sirion 50 has a Capacity of 49.0 ccm (2.99 cubic inches).
What engine power does the KSR Sirion 50 have?
The 2018 KSR Sirion 50 has a Power of 3.9 HP (2.8 kW) @ 5750 RPM.
How much does the KSR Sirion 50 weigh?
The 2018 KSR Sirion 50 has a Dry weight of 92.0 kg (202.8 pounds).
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