autoevolution

Segment: Clasic

The BSA Y13 was one of the most powerful machines available on the market up to date, thanks to its air-cooled, four-stroke, 748cc, V-Twin powerplant, paired to a four-speed manual transmission that could reach a maximum power output of 27 horsepower at 4800 rpm.

Standard fittings for this powerful machine include a chromed, single-sided, dual exhaust system, a hard-tail rear suspension with a sprung seat, laced wheels, large fenders, wide handlebars, a large headlight, a front girder fork with a single spring and a steel duplex cradle frame plus drum brakes.

BSA Y13 1937 - 1938 3 Photos
BSA Y13 (1937 - 1938)BSA Y13 (1937 - 1938)BSA Y13 (1937 - 1938)
BSA Y13 1937 - 1938

BSA Y13 748

engine specs
Type
air-cooled, four-stroke, V-Twin, OHV
Displacement
748 cm3
Bore X Stroke
2.8x3.7 in OR 71 mm
Compression Ratio
-
Horsepower
27/4800 KW(hp)/RPM
Torque
0/- lb-ft/RPM OR 0 Nm/RPM
Fuel System
Amal 76 carburetor
transmission specs
Gearbox
4-speed, manual
Clutch
dry, multi-plate
Primary Drive
-
Final Drive
chain
chassis specs
Frame
steel, duplex cradle
Front Suspension
single spring girder fork
Rear Suspension
hard-tail, sprung seat
Front Brake
drum
Rear Brake
drum
dimension specs
Overall Length
-
Overall Width
29 in OR 737 mm
Seat Height
-
Weelbase
54 in OR 1372 mm
Ground Clearance
4.7 in OR 119 mm
Weight
450 lbs OR 204 kg
Fuel Capacity
4.5 gallons OR 17.0 L
tyres specs
Front
4.00 x 18
Rear
4.00 x 18
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