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Manufacturer BSA
Production 1971
Class Trial
Engine air-cooled, four-stroke, single cylinder, OHV
Bore / Stroke 83.8mm x 83.8mm
Compression ratio 10.0:1
Horse Power 34.06 HP (25.4 KW) @ 6200RPM
Torque 28.03 ft/lbs (38.0 Nm) @ 5000RPM
Transmission Gear box: 4-speed, manual

Final Drive: chain

Clutch: wet multi-disc, manual
Suspension Front: telescopic fork
Rear: dual shocks
Brakes Front: drum
Rear: drum
Front Tire 3.00 x 20
Rear Tire 4.00 x 19
Wheelbase 54.02 inches (1372 mm)
Dimensions L 85.0 inches (2159 mm)
W 29.02 inches (737 mm)
Seat height 32.01 inches (813 mm)
Weight  (dry), 140.0 kg (wet)
Manuals Service Manual
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The BSA B50 T was a air-cooled, four-stroke, single cylinder, OHV Trial motorcycle produced by BSA in 1971. Max torque was 28.03 ft/lbs (38.0 Nm) @ 5000 RPM. Claimed horsepower was 34.06 HP (25.4 KW) @ 6200 RPM.


A 83.8mm bore x 83.8mm stroke result in a displacement of just 499.0 cubic centimeters.


The bike has a 4-speed, manual transmission. Power was moderated via the wet multi-disc, manual.


It came with a 3.00 x 20 front tire and a 4.00 x 19 rear tire. Stopping was achieved via drum in the front and a drum in the rear. The front suspension was a telescopic fork while the rear was equipped with a dual shocks. The wheelbase was 54.02 inches (1372 mm) long.

1971 - 1973 BSA B50 T[edit]

1971 - 1973 BSA B50 T 1971 - 1973 BSA B50 T

The 1971 BSA B50 T has, at its heart, an air-cooled, four-stroke, 499cc, single cylinder powerplant mated to a four-speed manual transmission and can produce 34 horsepower and 38 Nm of torque. This two-wheeler also comes with feature such as laced wheels, a telescopic front fork, dual shocks in the rear, drum brakes on both the front and the rear wheels, a dual seat, passenger grab rails, a small, round headlight, a small fuel tank and mid-mounted foot pegs.