Janus Halcyon 450 - 2024 Specifications and Reviews

The 2024 Jawa 350 OHC Sport is a retro-styled custom cruiser powered by a 397cc air-cooled twin delivering 26.8 HP, offering accessible performance for riders seeking classic aesthetics with modern reliability. Its manageable power delivery, lightweight character, and distinctive vintage design make it ideal for commuters and enthusiasts who appreciate old-school charm without complexity.

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General information

TypeCustom / cruiser
Year model2024
Motorcycle nameJawa 350 OHC Sport

Engine and Transmission Specifications

Emission detailsEuro 4
Transmission typeChain (final drive)
Gearbox5-speed
Cooling systemAir
Fuel controlOverhead Cams (OHC)
Bore x stroke85.0 x 70.0 mm (3.3 x 2.8 inches)
Compression8.8:1
Top speed115.0 km/h (71.5 mph)
Torque31.0 Nm (3.2 kgf-m or 22.9 ft.lbs) @ 5000 RPM
Effect26.8 HP (19.6 kW)) @ 6500 RPM
Type of engineTwin, four-stroke
Capacity:397.2 ccm (24.24 cubic inches)
 
 

Brakes, suspension, Frame and wheels

Rear brakesSingle disc
Diameter276 mm (10.9 inches)
Front brakesSingle disc
Rear tire130/70-18
Front tire100/90-19
Rear wheel travel70 mm (2.8 inches)
Rear suspensionTwin shocks
Front wheel travel120 mm (4.7 inches)
Front suspensionTelescopic

Physical measures and capacities

Reserve fuel capacity2.00 litres (0.53 US gallons)
Fuel capacity12.50 litres (3.30 US gallons)
Wheelbase1420 mm (55.9 inches)
Seat height760 mm (29.9 inches) If adjustable, lowest setting.
Power/weight ratio0.1676 HP/kg
Dry weight160.0 kg (352.7 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
Update specs
StarterElectric
Color optionsBlack

Performance Profile & Rider Fit

26.8 hp
Peak Power
12.5s
0-60 mph
71.5 mph
Top Speed

Best For

Track15%
City70%
Cornering45%
Daily Riding65%
Touring40%
Passenger40%

Rider Profile

Best ForThis bike suits new to intermediate riders who want a low-stress, low-power machine to build confidence on.
PurposeIt's built for relaxed cruising and everyday commuting rather than outright speed or long-distance touring.
Rider FitThe low seat height and modest weight make it manageable for shorter or less physically strong riders.
CharacterIt has a classic, unhurried cruiser personality with simple mechanicals and a laid-back retro feel.
Not Ideal ForIt'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.

Rider Reviews

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