14 August. Friday 2026
Janus Halcyon 450 - 2022 Specifications and Reviews
General information | |
| Category | Allround |
| Model | Janus Halcyon 450 |
| Year | 2022 |
Engine and Transmission Specifications | |
| Clutch | Wet multiplate |
| Transmission type | Chain (final drive) |
| Cooling system | Air |
| Lubrication system | Dry sump with gerotor pump, cartridge filter, and oil cooler |
| Ignition | CDI |
| Fuel control | Single Overhead Cams (SOHC) |
| Fuel system | Carburettor. Electronic injection |
| Compression | 10.1:1 |
| Top speed | 144.8 km/h (90.0 mph) |
| Power | 30.0 HP (21.9 kW) @ 7500 RPM |
| Engine type | Single cylinder, four-stroke |
| Capacity: | 445.0 ccm (27.15 cubic inches) |
| | |
Brakes, suspension, Frame and wheels | |
| Rear brakes | Single disc. Single Piston caliper brembo |
| Diameter | 280 mm (11.0 inches) |
| Front brakes | Double disc. Two-piston caliper Brembo |
| Rear tire | 4.50-18 |
| Front tire | 4.00-18 |
| Rear Suspension | Proprietary cantilever transom with dual progressive coil-over Ikon shocks |
| Front Suspension | Proprietary dual progressive shock leading-link |
| Frame type | DOM tubular steel cradle |
Physical measures and capacities | |
| Fuel capacity | 7.57 litres (2.00 US gallons) |
| Wheelbase | 1422 mm (56.0 inches) |
| Overall width | 787 mm (31.0 inches) |
| Overall length | 2184 mm (86.0 inches) |
| Overall height | 1041 mm (41.0 inches) |
| Seat height | 762 mm (30.0 inches) If adjustable, lowest setting. |
| Power/weight ratio | 0.1868 HP/kg |
| Dry weight | 160.6 kg (354.0 pounds) |
Other specs | |
| Maintenance | Find parts, fluids, filters, maintenance tools and service items on eBay |
| Factory warranty | 2-year unlimited-mileage warranty |
| Starter | Electric |
| Color options | British Racing Green, Vintage Red, Aga Cream, Black, American Blue, Charcoal, Olive, Cardinal Red |
Performance Profile & Rider Fit
26.8 hp
Peak Power
12.5s
0-60 mph
90 mph
Top Speed
Best For
Track15%
City70%
Cornering45%
Daily Riding65%
Touring40%
Passenger40%
Rider Profile
| Best For | This bike suits new to intermediate riders who want a low-stress, low-power machine to build confidence on. |
| Purpose | It's built for relaxed cruising and everyday commuting rather than outright speed or long-distance touring. |
| Rider Fit | The low seat height and modest weight make it manageable for shorter or less physically strong riders. |
| Character | It has a classic, unhurried cruiser personality with simple mechanicals and a laid-back retro feel. |
| Not Ideal For | It's not for riders seeking highway-speed touring performance or any serious off-road capability. |
Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.
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