Yamaha XZ550

The Yamaha Vision (XZ550) was a motorcycle produced in 1982-83. It offered innovative technology in its motor and bold (too bold according to some) styling.

Early production models were flawed with poor braking and carburetion glitches.

Models

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

• 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

Transmission

• gearbox: 5 speed
• final drive: shaft

Wheels

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

Measurements

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