NSU 351 OSL: history, specs, pictures

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The NSU 351 OSL was a single cylinder, four-stroke sport motorcycle produced between 1934 and 1940. It could reach a top speed of 68 mph (110 km/h). Claimed horsepower was 17.57 HP (13.1 KW) @ 5020 RPM.

Engine[edit | edit source]

The engine was a air cooled single cylinder, four-stroke. A 75.0mm bore x 79.0mm stroke result in a displacement of just 346.0 cubic centimeters.

Drive[edit | edit source]

The bike has a 4-speed transmission. The final drive was via chain.

Chassis[edit | edit source]

It came with a 3.25-19 front tire and a 3.25-19 rear tire. Stopping was achieved via expanding brake (drum brake) in the front and a expanding brake (drum brake) in the rear. The bike weighed just 242.51 pounds (110.0 Kg). The wheelbase was 55.91 inches (1420 mm) long.

In Media[edit | edit source]

NSU 351 OSL
Manufacturer
NSU
Production 1934 - 1940
Class Road
Engine
single cylinder, four-stroke
Bore / Stroke 75.0mm x 79.0mm
Top Speed 68 mph (110 km/h)
Horsepower 17.57 HP (13.1 KW) @ 5020RPM
Fuel System carburetor. graetzin ke 25/43
Transmission Gear box: 4-speed
Final Drive: chain
Brakes Front: expanding brake (drum brake)
Rear: expanding brake (drum brake)
Front Tire 3.25-19
Rear Tire 3.25-19
Wheelbase 55.91 inches (1420 mm)
Length 79.53 inches (2020 mm)
Width 30.31 inches (770 mm)
Height 37.01 inches (940 mm)
Weight 242.51 pounds (110.0 Kg) (dry),
Manuals Service Manual


The NSU 351 OSL was a single cylinder, four-stroke Road motorcycle produced by NSU between 1934 and 1940. It could reach a top speed of 68 mph (110 km/h). Claimed horsepower was 17.57 HP (13.1 KW) @ 5020 RPM.

Engine[edit | edit source]

The engine was a air cooled single cylinder, four-stroke. A 75.0mm bore x 79.0mm stroke result in a displacement of just 346.0 cubic centimeters.

Drive[edit | edit source]

The bike has a 4-speed transmission.

Chassis[edit | edit source]

It came with a 3.25-19 front tire and a 3.25-19 rear tire. Stopping was achieved via expanding brake (drum brake) in the front and a expanding brake (drum brake) in the rear. The bike weighed just 242.51 pounds (110.0 Kg). The wheelbase was 55.91 inches (1420 mm) long.

In Media[edit | edit source]