Suzuki RM400: history, specs, pictures

**Suzuki RM400**
Manufacturer	Suzuki
Also called	RM 400
Production	1978
Predecessor	Suzuki RM370
Class	Motocross
Engine	Air-cooled, Single Cylinder, Two-stroke
Bore / Stroke	80.0mm x 80.0mm
Compression ratio	6.7:1
Horse Power	43.05 HP (32.1 KW) @ 6500RPM
Torque	3.69 ft/lbs (5.0 Nm) @ 6000RPM
Fuel system	Mikuni VM36SS Carburetor
Sparkplug	NGK B8EGV '80-81; NGK B8EV '79
Transmission	Gear box: 5-Speed ; Final Drive: Chain ; Clutch: Wet, multiplate ;
Suspension	Front: Air/oil-damped, Leading Axle ; Rear: Aluminum Box Type, Gas-oil Shocks
Brakes	Front: Drum ; Rear: Drum
Front Tire	3.00-21-4PR
Rear Tire	4.50-18-4PR
Wheelbase	57.09 inches (1450 mm)
Dimensions	L 84.29 inches (2141 mm); W 34.8 inches (884 mm);
Weight	(dry), 105.0 kg (wet)
Manuals	Service Manual
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The Suzuki RM400 was a Air-cooled, Single Cylinder, Two-stroke Trial motorcycle produced by Suzuki in 1978. Max torque was 3.69 ft/lbs (5.0 Nm) @ 6000 RPM. Claimed horsepower was 43.05 HP (32.1 KW) @ 6500 RPM.

Engine

A 80.0mm bore x 80.0mm stroke result in a displacement of just 402.0 cubic centimeters.

Drive

The bike has a 5-Speed transmission. Power was moderated via the Wet, multiplate.

Chassis

It came with a 3.00-21-4PR front tire and a 4.50-18-4PR rear tire. Stopping was achieved via Drum in the front and a Drum in the rear. The front suspension was a Air/oil-damped, Leading Axle while the rear was equipped with a Aluminum Box Type, Gas-oil Shocks. The wheelbase was 57.09 inches (1450 mm) long.

The Suzuki RM400 is a motorcycle produced by Suzuki from 1979 to 1981.