Yamaha XZ550 Vision: review, history, specs

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Yamaha XZ550
Manufacturer Yamaha
Also called Vision, XZ550S
Production 1982 - 1983
Class Sport bike
Engine 553cc V-twin, four-stroke
Bore / Stroke 80.0mm x 55.0mm
Compression ratio 10.5:1
Top speed 112 mph (180 km/h)
Horse Power 62.63 HP (46.7 KW) @ 9500RPM
Torque 36.88 ft/lbs (50.0 Nm) @ 8500RPM
Sparkplug NGK D8EA '82-83
Battery YUASA YB14L-A2 '82-83
Transmission Gear box: 5-speed
Final Drive: shaft drive (cardan)
Suspension Front: Telescopic Fork
Rear: Swingarm Monocross
Brakes Front: dual disc
Rear: expanding brake
Front Tire 90/90-18
Rear Tire 4.25/85-18
Wheelbase 56.89 inches (1445 mm)
Dimensions L 83.5 inches (2121 mm)
W 33.31 inches (846 mm)
Seat height 30.71 inches (780 mm)
Weight  (dry), 228.0 kg (wet)
Fuel capacity 4.49 Gallon (17.00 Liters)
Manuals Service Manual
Tech Specs · Brochures · Reviews · Ads · Videos

The Yamaha XZ550S was a V-twin, four-stroke sportbike motorcycle produced by Yamaha between 1982 and 1983. It offered innovative technology in its motor and bold (too bold according to some) styling. It could reach a top speed of 112 mph (180 km/h). Max torque was 36.88 ft/lbs (50.0 Nm) @ 8500 RPM. Claimed horsepower was 62.63 HP (46.7 KW) @ 9500 RPM.

History[edit]

Early production models were flawed with poor braking and carburetion glitches. Three slightly different models were produced: the European model, with dual front braking discs, the 1982 US model (RJ), with a single disc and the 1983 US model (RK), with dual discs and a fairing. The models also use different sparkplugs and front forks.

Engine[edit]

The engine was a liquid cooled v2, four-stroke. A 80.0mm bore x 55.0mm stroke result in a displacement of just 553.0 cubic centimeters. Fuel was supplied via a double overhead cams/twin cam (dohc).

  • 4 stroke 70-degree DOHC V-Twin
  • 4 valves per cylinder
  • liquid cooled
  • 552 cm³
  • 65 hp (48 kW) @ 9500 rpm
  • 50 N·m (37 ft·lbf) @ 8500 rpm

Drive[edit]

The bike has a 5-speed transmission.

  • gearbox: 5 speed
  • final drive: shaft

Chassis[edit]

It came with a 90/90-18 front tire and a 4.25/85-18 rear tire. Stopping was achieved via dual disc in the front and a expanding brake in the rear. The front suspension was a Telescopic Fork while the rear was equipped with a Swingarm Monocross. The XZ550S was fitted with a 4.49 Gallon (17.00 Liters) fuel tank. The wheelbase was 56.89 inches (1445 mm) long.


Wheels[edit]

  • front tire: 90/90-18 51H
  • rear tire: 110/90-18 61H
  • front brake: single/dual discs
  • rear brake: drum

Measurements[edit]

  • wet weight: 212 kg (467 lb)
  • fuel capacity: 17 l (4.5 US gal)

1983[edit]



1983 Yamaha XZ 550[edit]

1983 Yamaha XZ 550

The Yamaha Vision, also know as the XZ 550, was a motorcycle produced in 1982-83. This bike won the prize of the "Best Middleweight" motorcycle in 1983.


In Media[edit]