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Scooters

2018KSR Sirion 125

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The 2018 KSR Sirion 125 is an affordable 125cc scooter from the Austrian KSR group. Its air-cooled 125cc single makes 9.7 hp at 8,000 rpm through an automatic transmission with belt drive. At 108 kg dry with a 6-litre tank, it suits city commuting.

Capacity
125.0 ccm
Engine
Single, four-stroke
Gearbox
Not on record
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Dry weight
108.0 kg
Seat height
Not on record
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Power
9.7 HP (7.1 kW) @ 8000 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 17Agility 65Comfort 58Off-road 5Touring 20Road manners 55
Off-road & trail5%
Cornering35%
City riding82%
Daily riding78%
Touring20%
Two-up35%
Track5%
Best for
Designed as a practical, economical commuter scooter for short urban and suburban trips.
Built for
An unassuming, budget-friendly city runabout that prioritizes fuel economy and ease of use over performance.
Not ideal for
Not suitable for riders wanting highway touring capability, high speed performance, or off-road use.

Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.

Full specifications

Engine
Capacity
125.0 ccm
Power
9.7 HP (7.1 kW) @ 8000 RPM
Engine type
Single, four-stroke
Power/weight ratio
0.0898 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
108.0 kg
Fuel capacity
6.00 litres
Seat height
Not on record - add it
Chassis & suspension
Frame
Steel
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 125 cc 125 cc 125 cc 125 cc 125 cc
Dry weight 108 kg 108 kg 115 kg 115 kg 115 kg
Fuel capacity 6 L 6 L 6 L 6 L 6 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 125?

The 2018 KSR Sirion 125 has a Capacity of 125.0 ccm (7.63 cubic inches).

What engine power does the KSR Sirion 125 have?

The 2018 KSR Sirion 125 has a Power of 9.7 HP (7.1 kW) @ 8000 RPM.

How much does the KSR Sirion 125 weigh?

The 2018 KSR Sirion 125 has a Dry weight of 108.0 kg (238.1 pounds).

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