Naked Motorcycles
2021Janus Halcyon 250
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The 2021 Janus Halcyon 250 is an approachable all-rounder designed for novice and recreational riders seeking affordable, dependable commuting. Its modest 14hp single-cylinder engine delivers predictable handling and fuel efficiency, making it ideal for urban riding and short-distance touring. Known for simplicity and practicality, this model prioritizes reliability over performance.
- Capacity
- 229.0 ccm
- Engine
- Single, four-stroke
- Gearbox
- 5-speed
- Dry weight
- 119.3 kg
- Seat height
- 787 mm
- Power
- 14.0 HP (10.2 kW) @ 7000 RPM
What’s new for the 2021 Janus Halcyon 250
vs the 2020| Spec | 2020 | 2021 |
|---|---|---|
| Front brakes | Double disc | Double disc. 2 piston caliper |
| Rear brakes | Single disc | Single disc. Single Piston |
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built for leisurely, style-focused riding around town and on quiet backroads rather than any kind of performance or distance work.
- Built for
- A charming, retro-styled single-cylinder cruiser that prioritizes classic looks, simplicity, and a relaxed low-speed ride over outright capability.
- Not ideal for
- This is not the bike for riders wanting highway touring comfort, off-road capability, or any real straight-line performance.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Will it fit you?
Worked out in your browser - nothing is sent to usRange and running costs
Worked out in your browser - nothing is sent to usBased on the published US (EPA-style) fuel economy estimate and tank size. Real-world figures depend on how and where you ride, and the last litres of a tank are reserve. Prices shown greyed are examples - type your own.
Engine
- Capacity
- 229.0 ccm
- Power
- 14.0 HP (10.2 kW) @ 7000 RPM
- CO2 Emissions
- 69 CO2 g/km
- EPA Est. Fuel Consumption
- 2.92 L/100km (80.6 US mpg)
- EPA CO Emissions
- 8.0 CO g/km
- Torque
- 15.8 Nm (1.6 kgf-m) @ 5500 RPM
- Engine type
- Single, four-stroke
- Power/weight ratio
- 0.1174 HP/kg (dry)
- Bore x stroke
- 67.0 x 65.0 mm
- Compression
- 9.2:1
- Cooling system
- Air
- Fuel system
- Carburettor
- Starting
- Electric & kick
- Ignition
- CDI
- Aspiration
- Naturally aspirated
- Valves per cylinder
- 2
Transmission
- Gearbox
- 5-speed
- Transmission type
- Manual
- Clutch
- Wet multiplate
Performance
- Top speed
- 112.7 km/h (70.0 mph)
Dimensions & weight
- Wheelbase
- 1346 mm
- Overall length
- 2032 mm
- Overall width
- 787 mm
- Overall height
- 1041 mm
- Seat height
- 787 mm
- Dry weight
- 119.3 kg
- Fuel capacity
- 7.30 litres
Chassis & suspension
- Frame
- DOM tubular steel cradle
- Front suspension
- Proprietary dual progressive shock leading-link
- Rear suspension
- Hardtail with sprung seat
Brakes & wheels
- Front brakes
- Double disc. 2 piston caliper
- Rear brakes
- Single disc. Single Piston
- Front tyre
- 3.00-18
- Rear tyre
- 3.5-18
Other
- Color options
- British Racing Green, Vintage Red, Aga Cream, Black, American Blue, Charcoal, Olive, Cardinal Red
- Modifications compared to previous model
- NEW 2021 Improved Front/Rear Brake Balance NEW 2021 Digital Speedometer and Updated Switches NEW 2021 LED Headlight
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 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|
| Capacity | 229 cc | 229 cc | 229 cc | 229 cc | 229 cc |
| Dry weight | 119 kg | 119 kg | 119 kg | 119 kg | 119 kg |
| Seat height | 787 mm | 787 mm | 787 mm | 787 mm | 787 mm |
| Fuel capacity | 7.3 L | 7.3 L | 7.3 L | 7.3 L | 7.3 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 Janus Halcyon 250?
The 2021 Janus Halcyon 250 has a Capacity of 229.0 ccm (13.97 cubic inches).
What engine power does the Janus Halcyon 250 have?
The 2021 Janus Halcyon 250 has a Power of 14.0 HP (10.2 kW) @ 7000 RPM.
How many gears does the Janus Halcyon 250 have?
The 2021 Janus Halcyon 250 has a Gearbox of 5-speed.
What is the torque of the Janus Halcyon 250?
The 2021 Janus Halcyon 250 has a Torque of 15.8 Nm (1.6 kgf-m or 11.7 ft.lbs) @ 5500 RPM.
How much does the Janus Halcyon 250 weigh?
The 2021 Janus Halcyon 250 has a Dry weight of 119.3 kg (263.0 pounds).
Shop this bike
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The 2021 Janus Halcyon 250 motorcycle is a stunning vintage-inspired bike that offers a smooth and enjoyable riding experience. With its classic design and modern engineering, this motorcycle is a head-turner on the road. The Halcyon 250 is powered by a 249cc air-cooled single-cylinder engine, providing ample power for city commuting and highway cruising. Its lightweight frame and nimble handling make it an ideal choice for riders of all skill levels. The attention to detail in the construction of the Halcyon 250 is evident in its high-quality components and overall craftsmanship, making it a must-have for motorcycle enthusiasts looking for a unique and reliable ride.
The Janus Halcyon 250 motorcycle is a stylish and versatile choice for riders who appreciate vintage aesthetics and modern performance. Its retro design, combined with its efficient and powerful engine, sets it apart from other bikes in its class. Whether you're navigating through city streets or enjoying a leisurely ride through the countryside, the Halcyon 250 delivers a comfortable and exhilarating riding experience. With its classic charm and dependable performance, this motorcycle effortlessly captures the essence of timeless motorcycle design.
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