NSU 4PS: history, specs, pictures

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NSU 4PS
Manufacturer
NSU
Production 1921 - 1925
Engine
twin, four-stroke
Bore / Stroke 63.0mm x 80.0mm
Top Speed 50 mph (80 km/h)
Horsepower 6.3 HP (4.7 KW) @ 3000RPM
Fuel System carburetor
Transmission Final Drive: belt
Front Tire 2.5-26
Rear Tire 2.5-26
Wheelbase 55.71 inches (1415 mm)
Length 86.61 inches (2200 mm)
Width 33.07 inches (840 mm)
Height 29.13 inches (740 mm)
Weight 264.55 pounds (120.0 Kg) (dry),
Fuel Capacity 2.38 Gallon (9.00 Liters)
Manuals Service Manual


The NSU 4PS was a twin, four-stroke standard produced by NSU between 1921 and 1925. It could reach a top speed of 50 mph (80 km/h). Claimed horsepower was 6.3 HP (4.7 KW) @ 3000 RPM.

Engine[edit]

The engine was a air cooled twin, four-stroke. A 63.0mm bore x 80.0mm stroke result in a displacement of just 498.0 cubic centimeters.

Chassis[edit]

It came with a 2.5-26 front tire and a 2.5-26 rear tire. The 4PS was fitted with a 2.38 Gallon (9.00 Liters) fuel tank. The bike weighed just 264.55 pounds (120.0 Kg). The wheelbase was 55.71 inches (1415 mm) long.