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Scooters

2017KSR Sirion 50

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The 2017 KSR Sirion 50 is an entry-level automatic scooter ideal for new riders and urban commuters seeking affordable, fuel-efficient transportation. Its lightweight 92 kg frame, compact dimensions, and CVT automatic transmission make it exceptionally easy to handle in city traffic. Best known for reliability and low operating costs, the Sirion 50 excels as a practical first vehicle for casual riding.

Capacity
49.0 ccm
Engine
Single, two-stroke
Gearbox
Not on record
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Dry weight
92.0 kg
Seat height
Not on record
Know it? Add it →
Power
3.9 HP (2.8 kW) @ 5750 RPM
⇄ Compare with another bike + Add to garage All model years
Other years 2017 2018 2019 2020 2021

How it rides

Editorial estimate from the spec sheet - not lab tested
Speed 6Agility 76Comfort 45Off-road 5Touring 10Road manners 55
Off-road & trail5%
Cornering40%
City riding90%
Daily riding75%
Touring10%
Two-up25%
Track5%
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.

Full specifications

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 20172018201920202021
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

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Common questions

What is the engine size of the KSR Sirion 50?

The 2017 KSR Sirion 50 has a Capacity of 49.0 ccm (2.99 cubic inches).

What engine power does the KSR Sirion 50 have?

The 2017 KSR Sirion 50 has a Power of 3.9 HP (2.8 kW) @ 5750 RPM.

How much does the KSR Sirion 50 weigh?

The 2017 KSR Sirion 50 has a Dry weight of 92.0 kg (202.8 pounds).

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