Beta KR: history, specs, pictures

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Beta KR
Also called KR250, KR 250
Production 1987 - 1989
single cylinder, two-stroke
Bore / Stroke 72.8mm x 57.5mm
Top Speed 54 mph (87 km/h)
Horsepower 9.79 HP (7.3 KW) @ 7900RPM
Transmission Gear box: 5-speed
Final Drive: chain
Brakes Front: single disc
Rear: expanding brake
Front Tire 3.00-21
Rear Tire 4.00-18
Weight 116.0 kg (wet)
Fuel Capacity 2.51 Gallon (9.50 Liters)
Manuals Service Manual

The Beta KR250 was a single cylinder, two-stroke standard produced by Beta between 1987 and 1989. It could reach a top speed of 54 mph (87 km/h). Claimed horsepower was 9.79 HP (7.3 KW) @ 7900 RPM.


The engine was a air cooled single cylinder, two-stroke. A 72.8mm bore x 57.5mm stroke result in a displacement of just 239.0 cubic centimeters. Fuel was supplied via a membrane.


The bike has a 5-speed transmission.


It came with a 3.00-21 front tire and a 4.00-18 rear tire. Stopping was achieved via single disc in the front and a expanding brake in the rear. The KR250 was fitted with a 2.51 Gallon (9.50 Liters) fuel tank.