Ariel KH 500 Huntmaster - Specifications & Review

KH 500 Huntmaster

Article Complete Info

Articleid494441
CategoryAllround
MakeAriel
ModelKH 500 Huntmaster
Year1955

Chassis, Suspension, Brakes & Wheels

FrametypeDuplex loop
FrontbrakesExpanding brake (drum brake)
FrontsuspensionTelescopic forks
Fronttyre3.00-20
RearbrakesExpanding brake (drum brake)
RearsuspensionRigid
Reartyre3.50-19
SeatSolo seat with springs
WheelsWire spoked. Dunlop tyres.

Engine & Transmission

Borexstroke56.0 x 86.0 mm (2.2 x 3.4 inches)
Clutchdry plate
Compression6.8:1
CoolingsystemAir
Displacement498.00 ccm (30.39 cubic inches)
EnginedetailsTwin, four-stroke
Exhaustsystem2-into-2 pipes
Fuelconsumption3.04 litres/100 km (32.9 km/l or 77.38 mpg)
FuelsystemCarburettor
Gearbox4-speed
Greenhousegases70.5 CO2 g/km. (CO2 - Carbon dioxide emission)
IgnitionLucas
LubricationsystemDry sump
Power28.03 HP (20.5 kW)) @ 6500 RPM
Topspeed145.0 km/h (90.1 mph)
TransmissiontypefinaldriveChain

Other Specifications

ColoroptionsRed
CommentsAriel was bought by BSA in 1944.
StarterKick

Physical Measures & Capacities

Dryweight177.0 kg (390.2 pounds)
Fuelcapacity17.00 litres (4.49 gallons)
Groundclearance140 mm (5.5 inches)
Oilcapacity3.80 litres (0.25 quarts)
Overalllength2,184 mm (86.0 inches)
Overallwidth686 mm (27.0 inches)
Powerweightratio0.1584 HP/kg
Seatheight787 mm (31.0 inches) If adjustable, lowest setting.

About Ariel

Country of Origin: United Kingdom
Founder: James Starley & William Hillman (bicycles); later Ariel Motorcycles under Charles Sangster
Best Known For: Square Four tourers, Red Hunter singles, and innovative early designs

Company History

Ariel is among Britain’s most storied names, moving from bicycles to motorcycles in the brass era and innovating through several epochs. The Red Hunter singles set a standard for sporting roadsters, while Edward Turner’s Square Four delivered creamy long-distance power from a compact four-cylinder layout. Postwar Ariels carried commuters and enthusiasts alike, with alloy cylinders and tidy frames that showcased the firm’s engineering finesse. The two-stroke Leader/Arrow of the late 1950s pushed modernity—enclosed bodywork, pressed steel, unit construction—foreshadowing scooters and lightweight commuters. Industry headwinds and consolidation into BSA/Triumph eventually ended motorcycle production in the late 1960s. In the 21st century, the Ariel name returned on radical lightweight cars and a boutique V-4 motorcycle prototype, channeling the brand’s historic appetite for bold design. Historically, Ariel symbolizes British ingenuity: elegant solutions to packaging and power delivery, a willingness to try new materials and layouts, and an understanding that motorcycles could be both fast and refined. A well-sorted Square Four remains a bucket-list ride—silky midrange, dignified pace, and the sense of traveling with civilized authority.

Other Years

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