autoevolution

Segment: Naked / Road

On a two-stroke engine, the height of the ports, especially the exhaust ports, determines the engine's basic state of tune.

Raise the ports and the engine is tuned for more
power at high rpm, at the expense of low-rpm power. Lower the tops of the ports and the opposite occurs. What Yamaha has devised for the RZ 350RR is the Yamaha Power Valve System (YPVS), which is an electronically controlled, variable-height exhaust port in each cylinder.

YAMAHA RZ 350RR 1984 - 1986 3 Photos
YAMAHA RZ 350RR (1984 - 1986)YAMAHA RZ 350RR (1984 - 1986)YAMAHA RZ 350RR (1984 - 1986)

YAMAHA RZ 350RR 350

engine specs
Type
Two stroke, parallel twin cylinder, YPVS
Displacement
347 cm3
Bore X Stroke
2.5x2.1 in OR 64 mm
Compression Ratio
6.2:1
Horsepower
54.2/9000 KW(hp)/RPM
Torque
30/9400 lb-ft/RPM OR 41/9400 Nm/RPM
Fuel System
2x 26mm Mikuni slide-needle carburetor
transmission specs
Gearbox
6-Speed
Clutch
Wet, multiplate
Primary Drive
-
Final Drive
Chain
chassis specs
Frame
-
Front Suspension
Telescopic forks air assistance and variable damping
Rear Suspension
Rising rate Monocross 5-way preload
Front Brake
Double discs 260 mm
Rear Brake
Single disc 260 mm
dimension specs
Overall Length
82.5 in OR 2096 mm
Overall Width
27.6 in OR 701 mm
Seat Height
31.1 in OR 790 mm
Weelbase
54.5 in OR 1384 mm
Ground Clearance
0.6 in OR 15 mm
Weight
342 lbs OR 155 kg
Fuel Capacity
4.5 gallons OR 17.0 L
tyres specs
Front
90/90-18 51H
Rear
110/80-18 58H
power system specs
Power pack
-
Nominal Capacity
-
Maximum Capacity
-
Charger type
-
Charging time (normal)
-
Charging time (quick)
-
Range
-
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