Yamaha XJ550
'Yamaha XJ550' | |
Manufacturer | [[Yamaha]] |
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Also called | XJ550H, XJ 550 H, XJ 550, Maxim |
Production | 1981 - 1984 |
Class | [[:Category:Naked motorcycles|Naked]] [[Category:Naked motorcycles]] |
Engine | in-line four, four-stroke |
Bore / Stroke | 57.0mm x 51.8mm |
Compression ratio | 9.5:1 |
Top Speed | 109 mph (176 km/h) |
Horsepower | 48.95 HP (36.5 KW) @ 9000RPM |
Torque | 30.98 ft/lbs (42.0 Nm) @ 7500RPM |
Spark Plug | NGK D8EA '81-83 |
Battery | YUASA 12N12A-4A-1 '81-83 |
Transmission | Gear box: 6-speed Final Drive: chain |
Suspension | Front: Telescopic Coil Spring Forks Rear: Swinging Arm With Dual Dampers Adjustable For Preload |
Brakes | Front: dual disc Rear: expanding brake |
Front Tire | 3.00-19 |
Rear Tire | 110/90-18 |
Weight | 204.0 kg (wet) |
Oil Filter | K&N KN-144 |
Fuel Capacity | 3.96 Gallon (15.00 Liters) |
Manuals | Service Manual |
The Yamaha XJ550 was a in-line four, four-stroke Naked motorcycle produced by Yamaha between 1981 and 1984. It could reach a top speed of 109 mph (176 km/h). Max torque was 30.98 ft/lbs (42.0 Nm) @ 7500 RPM. Claimed horsepower was 48.95 HP (36.5 KW) @ 9000 RPM.
Engine
The engine was a air cooled in-line four, four-stroke. A 57.0mm bore x 51.8mm stroke result in a displacement of just 528.0 cubic centimeters. Fuel was supplied via a double overhead cams/twin cam (dohc).
Drive
The bike has a 6-speed transmission. Power was moderated via the Wet multi-plate.
Chassis
It came with a 3.00-19 front tire and a 110/90-18 rear tire. Stopping was achieved via dual disc in the front and a expanding brake in the rear. The front suspension was a Telescopic Coil Spring Forks while the rear was equipped with a Swinging Arm With Dual Dampers Adjustable For Preload. The XJ550 was fitted with a 3.96 Gallon (15.00 Liters) fuel tank.
1981 - 1983 Yamaha XJ 550
The XJ 550 was launched in 1981. The Yamaha XJ 550 Seca was also well-equipped, with features you’d expect only on bigger, costlier bikes: self-canceling turn signals; a clutch/neutral electrical interlock that prevented the Seca being ridden away with the sidestand down by killing the engine if you shifted into first before lifting the stand.
1983
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