Ariel Leader

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Ariel Leader
Production 1958 - 1965
Class Naked
twin, two-stroke
Bore / Stroke 54.0mm x 54.0mm
Top Speed 70 mph (112 km/h)
Horsepower 17.17 HP (12.8 KW) @ 6250RPM
Transmission Gear box: 4-speed

Final Drive: chain

Clutch: Dry
Suspension Front: trailing link oil-damped
Rear: swingarm
Brakes Front: expanding brake (drum brake)
Rear: expanding brake (drum brake)
Front Tire 3.25-16
Rear Tire 3.25-16
Wheelbase 50.98 inches (1295 mm)
Seat Height 30.0 inches (762 mm)
Weight 330.69 pounds (150.0 Kg) (dry), 162.0 kg (wet)
Fuel Capacity 2.38 Gallon (9.00 Liters)
Fuel Consumption 2.94 liters/100 km (34.0 km/l or 80.01 mpg)
Related Ariel Arrow
Manuals Service Manual

The Ariel Leader was a twin, two-stroke Naked motorcycle produced by Ariel between 1958 and 1965. It could reach a top speed of 70 mph (112 km/h). Claimed horsepower was 17.17 HP (12.8 KW) @ 6250 RPM.


1963 Ariel Arrow Super Sports

The Leader was probably Ariel's bravest foray into motorcycle manufacturing. It was an innovate, fully enclosed 250cc two-stroke released in 1959. Producing peak output of 18bhp, with the twin-cylinder engine based on that of the German Adler. The leader was intended to be a proper motorcycle with the convenience of a scooter. The Leader actually worked rather well, with a top speed of about 70mph (112kph) and excellent handling. But the public didn't take well to it. Ariel later striped the bodywork to produce the Arrow, with a tuned 20bhp engine in the Super Sports and Golden Arrow variants. Although the Arrow sold well it wasn't enough to stop Ariel from going under in 1967.


The engine was a air cooled twin, two-stroke. A 54.0mm bore x 54.0mm stroke result in a displacement of just 249.0 cubic centimeters. Fuel was supplied via a overhead valves (ohv).


The bike has a 4-speed transmission. Power was moderated via the Dry.


It came with a 3.25-16 front tire and a 3.25-16 rear tire. Stopping was achieved via expanding brake (drum brake) in the front and a expanding brake (drum brake) in the rear. The front suspension was a trailing link oil-damped while the rear was equipped with a swingarm. The Leader was fitted with a 2.38 Gallon (9.00 Liters) fuel tank. The bike weighed just 330.69 pounds (150.0 Kg). The wheelbase was 50.98 inches (1295 mm) long.

1958 - 1965 Ariel Leader[edit]

1958 - 1965 Ariel Leader 1958 - 1965 Ariel Leader

Manufactured from 1958 to 1965, the Leader has a 247 cc two stroke parallel twin engine with 17HP at 6750rpm and could reach a speed of 70mph.

In Media[edit]