YAMAHAXJ 600 1984 - 1991

　　The Yamaha XJ 600 was a motorcycle made by Yamaha between 1984 and 1991 until it was replaced by the Yamaha Diversion/Seca II. The bike was sold as the FJ 600 in the North American market.

　　Yamaha XJ 600 and FJ 600 were notable for being the first four-cylinder Japanese motorcycle with a 600cc displacement. In addition, the bikes were the first inline-four machines that packed a mono-shock rear suspension system two years after the 1982 Kawasaki GPZ 550 Unitrak.

　　In 1984, the Japanese motorcycle manufacturer launched the Yamaha XJ 600, a motorcycle fitted with standard features, such as a rectangular headlight integrated into an upper fairing, a small windscreen, a one-piece dual seat with pillion grab rails, a four-into-two exhaust system with a silencer on each side, and three-spoke lightweight wheels.

　　The 1984 Yamaha XJ 600 had its heartbeat set by a 598cc four-stroke four-cylinder air-cooled engine managed by four Mikuni carburetors, delivering an output power of 72 hp at 10,000 rpm and 54 Nm (40 lb-ft) torque at 8,000 rpm.

　　A six-speed manual transmission with a wet multi-disc clutch and a final chain drive handled the power, pushing the motorcycle to a top speed of 205 kph (127 mph).

　　As for the braking performance, the bike's wheels were fitted with two 267 mm discs tied to dual-piston calipers on the front and a 267 mm disc coupled to a single-piston caliper on the