Yamaha RZ350: history, specs, pictures

**Yamaha RZ350**
Manufacturer	Yamaha
Also called	RZ 350
Production	1984 - 1985
Predecessor	Yamaha RD350
Class	Sport bike
Engine	347cc twin, two-stroke
Bore / Stroke	64.0mm x 54.0mm
Compression ratio	6.0:1
Top speed	111 mph
Horse Power	52 bhp @ 8,750 rpm
Torque	30.4 ft-lb @ 7,500 rpm
Fuel system	carburetor. mikuni vm26ss/2
Ignition type	CDI
Sparkplug	NGK BR8ES '84-85
Battery	YUASA 12N5-5-3B '84-85
Transmission	Gear box: 6-speed ; Final Drive: chain ; Clutch: wet, multiple-disc ;
Suspension	Front: telescopic fork ; Rear: swingarm
Brakes	Front: double disc ; Rear: single disc
Front Tire	90/90-18 51h
Rear Tire	110/80-18 58h
Wheelbase	54.53 inches (1385 mm)
Dimensions	L 83.46 inches (2120 mm); W 27.95 inches (710 mm); H 46.26 inches (1175 mm);
Seat height	31.5 inches (800 mm)
Weight	(dry), 168.0 kg (wet)
Fuel capacity	5.28 Gallon (20.00 Liters)
Fuel consumption	43 mpg
Related	Yamaha RD350 ; Yamaha YFZ350
Manuals	Service Manual
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The Yamaha RZ350 was a twin, two-stroke Road motorcycle produced by Yamaha from 1984 to 1985.

Overview

Yamaha RZ350 , LC/YPVS in the UK, is a motorcycle powered by a twin cylinder two-stroke engine, reed valved 347 cubic centimeter engine. The bore and stroke are 64x54 mm. It produces 30.4 ft·lbf of torque at 7500 rpm. It came out as the RD350L/C in non-U.S. markets in the 1981 model year. The L/C model did not contain the "powervalve" exhaust port device available on the U.S. model RZ350's of 1984 and 1985. It was the evolution of Yamaha's popular and well known RD350. Production was carried on into the 1990s and a variant of the engine is still produced and used in Yamaha's YFZ350 Banshee ATV.

RZ350 is now a sought after collectors bike, due to it being the last road going two-stroke motorcycle in America. It is also raced extensively in Vintage racing leagues, as well as its own racing leagues, often dubbed "RZ cups".

A true milestone sport bike, the lightweight 350cc 2-stroke was offered in white/red and as a Kenny Roberts signature model, as shown here.

Engine

The engine was a liquid cooled twin, two-stroke. A 64.0mm bore x 54.0mm stroke result in a displacement of just 347.0 cubic centimeters.

Drive

The bike has a 6-speed transmission. Power was moderated via the wet, multiple-disc.

Chassis

It came with a 90/90-18 51h front tire and a 110/80-18 58h rear tire. Stopping was achieved via double disc in the front and a single disc in the rear. The front suspension was a telescopic fork while the rear was equipped with a swingarm. The RZ350 was fitted with a 5.28 Gallon (20.00 Liters) fuel tank. The wheelbase was 54.53 inches (1385 mm) long.