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Production 1958
Class Classic
air-cooled, four-stroke, single cylinder, SOHV
Bore / Stroke 66.0mm x 66.0mm
Compression ratio 8.75:1
Horsepower 15.02 HP (11.2 KW) @ 5000RPM
Transmission Gear box: 4-speed, manual

Final Drive: chain

Clutch: four friction plates
Suspension Front: telescopic fork
Rear: dual shocks
Brakes Front: drum
Rear: drum
Front Tire 3.00 x 20
Rear Tire 4.00 x 18
Wheelbase 51.69 inches (1313 mm)
Length 80.51 inches (2045 mm)
Width 31.5 inches (800 mm)
Seat Height 32.01 inches (813 mm)
Weight 120.0 kg (wet)
Manuals Service Manual

The BSA C15 S was a air-cooled, four-stroke, single cylinder, SOHV Classic motorcycle produced by BSA in 1958. Claimed horsepower was 15.02 HP (11.2 KW) @ 5000 RPM.


A 66.0mm bore x 66.0mm stroke result in a displacement of just 249.0 cubic centimeters.


The bike has a 4-speed, manual transmission. Power was moderated via the four friction plates.


It came with a 3.00 x 20 front tire and a 4.00 x 18 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 51.69 inches (1313 mm) long.

1958 - 1967 BSA C15 S[edit]

1958 - 1967 BSA C15 S

The 1967 MY BSA C15 S has, at its heart, an air-cooled, four-stroke, 249cc, single cylinder powerplant mated to a four-speed manual transmission and can produce a claimed 15 horsepower at 5000 rpm. It also comes with laced wheels with knobby tires mounted on them, a single seat, a telescopic front fork coupled to plunger shocks in the rear, drum brakes, a small headlight and mid-mounted foot controls.