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BSA Motorcycles

BSA 1971 B25 B50 Singles

From the pipe that's tucked inside the frame, to the muffler that's baffled away in back, from the racing frame that carries the oil to the single cylinder, 4-stroke power plant, these bikes have been proven feature-by-feature by John Banks, Britain's famous champion racer.

Instantly detachable electrics disconnect with a single plug that goes to a single-source, water-resistant box.

All-aluminum copy of John Banks' Motocross, six-inch front brake. On all models, except Gold Star 500-SS.

BSA GOLD STAR 500 SS. (B-50SS)

Engine Type
No. of Cylinders
Max. Horsepower
Max. Torque
Bore/Stroke
Comp. Ratio
Transmission
Carburetor
Tire Size Front
Tire Size Rear
Front Brake Dia./Type
Rear Brake Dia./Type
Wheel Base
Ground Clearance
Dry Weight
Fuel Tank Capacity
Oil Capacity
OHV 4-stroke
1
34 bhp @ 6200 rpm
28 ft. lb. @ 5000 rpm
84 x 90 mm
10; 1
4-Speed gearbox
Amal 30mm concentric
Dunlop 3-25 x 18" K70
Dunlop 3-50 x 18" K70
8" DLS
7" SLS
54"
7"
310 lbs.
2 ½ gals.
4 ¾ pts.


Choose from three types: Street Scrambler, Trail, Moto-X. All bred-on-the-trail by John Banks, champion British rider.

John Banks riding on BSA, twice won Britain's national Moto-X championship and he helped BSA develop the features of these bikes. We took 500 ccs of British muscle, harnessed it in a four-stroke, single cylinder engine. We teamed it with a new, lightweight racing frame - a frame that contains and cools the engine oil, and eliminates the tank. Then we added new telescopic front forks that help keep you in control on any terrain; 3-way, adjustable,
Girling shocks, double-shoe brakes, to name just a
few of the features that make these 1971 trail bikes Britain's best. (In fact, the worse the trail gets, the better you like BSA.)

TWO MORE WAYS TO RIDE 500 AND TAKE OVER THE COUNTRY.

500 ccs of powerful performance, flowing from the smoothest, surest source you can get, the four-stroke, single cylinder, overhead valve engine. And every other feature is just as logically planned, including: inside-the-frame pipes, one compact source-box for electrics - with an instantly detachable plug, and the conical aluminum hubs. (Thank you, John Banks.)

BSA VICTOR 500-TRAIL

(B-50T)

Engine Type
No. of Cylinders
Max. Horsepower
Max. Torque
Bore/Stroke
Comp. Ratio
Transmission
Carburetor
Tire Size Front
Tire Size Rear
Front Brake Dia./Type
Rear Brake Dia./Type
Wheel Base
Ground Clearance
Dry Weight
Fuel Tank Capacity
Oil Capacity
OHV 4-stroke
1
34 bhp @ 6200 rpm
28 ft. lb. @ 3000 rpm
84 x 90 mm
10:1
4-Speed gearbox
Amal 30mm concentric
Dunlop 3-00 x 20" Trials
Dunlop 4.00 x 18" Trials
6" SLS
7" SLS
54"
7½"
298 lbs.
2½ gals. ( aluminum tank)
4¾ pts.

BSA VICTOR 500-MX.

(B-50MX)

Engine Type
No. of Cylinders
Max. Horsepower
Max. Torque
Bore/Stroke
Comp. Ratio
Transmission
Carburetor
Tire Size Front
Tire Size Rear
Front Brake Dia./Type
Rear Brake Dia./Type
Wheel Base
Ground Clearance
Dry Weight
Fuel Tank Capacity
Oil Capacity
OHV 4-stroke
1
38 bhp @ 6200 rpm
35 ft. lb. @ 5000 rpm
84 x 90 mm
10:1
4-Speed gearbox
Amal 32mm concentric
Dunlop 3.00 x 20" Sports
Dunlop 4.00 x 18" Sports
6" SLS
7" SLS
54"
7½"
240 lbs.
1¼ gal. (aluminum tank)
4¾ pts.

TWO 250s THAT PROVED THEMSELVES BEFORE YOU RACE THEM.

Each one of these bikes has features developed out of John Banks' own racing experience. Not only the big things you can see, like the power to go and the power to stop, the lightweight forks, and the new lightweight 20" front wheels, but features you can't see, like the competition-proved 4-speed gearbox, the high torque that makes extra gears unnecessary. And there are many, many more advantages. (Check the specs.)

BSA GOLD STAR 250-SS.

(B-25SS)


Engine Type
No of Cylinders
Max. Horsepower
Max. Torque
Bore/Stroke
Comp. Ratio
Transmission
Carburetor
Tire Size Front
Tire Size Rear
Front Brake Dia./Type
Rear Brake Dia./Type
Wheel Base
Ground Clearance
Dry Weight
Fuel Tank Capacity
Oil Capacity

OHV 4-stroke
1
22.5 bhp @ 8250 rpm
15.8 it. lb. @ 7000 rpm
67 x 70 mm
10:1
4-Speed gearbox
Amal 28mm concentric
Dunlop 3-25 x 18"K70
Dunlop 3-50 x 18" K70
6" SLS
7" SLS
54"
7"
290 lbs.
2¼ gals.
4¾ pts.

BSA VICTOR 250-TRAIL

(B-25T)


Engine Type
No. of Cylinders
Max. Horsepower
Max. Torque
Bore/Stroke
Comp. Ratio
Transmission.
Carburetor
Tire Size Front
Tire Size Rear
Front Brake Dia./Type
Rear Brake Dia./Type
Wheel Base
Ground Clearance
Dry Weight
Fuel Tank Capacity
Oil Capacity

OHV 4-stroke
1
22.5 bhp @ 8250 rpm
15.8 ft. lb. @ 7000 rpm
67 x 70 mm
10:1
4-Speed gearbox
Amal 28mm concentric
Dunlop 3.00x20" Trials
Dunlop 4.00 x 18" Trials
6" SLS
7" SLS
54"

287 lbs.
2½ gals, (aluminum tank)
4¾ pts.


If you have a query about BSA 1971 Singles please contact us
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