The Yamaha XJ900F motorcycle was produced from 1985-89 and had a four-stroke, transverse four-cylinder DOHC engine with 2 valves per cylinder. It had a capacity of 891cc with a bore and stroke of 68.5 x 60.5mm and a compression ratio of 9.6:1. The bike was air-cooled and had 4x Mikuni BS36 induction with CDI ignition and electric starting. The maximum power output was 98 hp/72 kW at 9000 rpm with a maximum torque of 81 Nm at 7000 rpm. The clutch was wet with six springs and the transmission had five speeds with a shaft for final drive. The YX900F had a steel tubular frame with 37mm telescopic fork front suspension and twin shock, swingarm rear suspension. The front brakes were two 267mm discs with a single 267mm disc at the rear. It had a rake of 27 degrees, a trail of 120mm/4.5in, a length of 2260mm/88.9in, a wheelbase of 1480mm/58.2in, and a seat height of 780mm/30.7in. The wet weight was 244kg/537.9lbs with a fuel capacity of 22 litres/5.8 US gal. The consumption average was 44.1 mph with a standing 1/4 mile of 12.1 sec/175.4 km/h and a top speed of 193.1 km/h.
Make Model: Yamaha XJ 900F
Year: 1985 – 89
Engine: Four stroke, transverse four cylinder, DOHC, 2 valves per cylinder.
Capacity: 891 cc / 54.3 cu-in
Bore x Stroke: 68.5 x 60.5 mm
Cooling System: Air cooled
Compression Ratio: 9.6:1
Induction: 4x Mikuni BS36
Ignition: CDI
Starting: Electric
Max Power: 98 hp / 72 kW @ 9000 rpm
Max Torque: 81 Nm / @ 7000 rpm
Clutch: Wet, 6 springs
Transmission: 5 Speed
Final Drive: Shaft
Frame: Steel tubular
Front Suspension: 37mm Telescopic fork
Rear Suspension: Twin shock, Swingarm
Front Brakes: 2x 267mm discs
Rear Brakes: Single 267mm disc,
Front Tyre: 100/90-18
Rear Tyre: 120/90-18
Rake: 27 degrees
Trial: 120 mm / 4.5 in
Length: 2260 mm / 88.9 in
Wheelbase: 1480 mm / 58.2 in
Seat Height: 780mm / 30.7 in
Ground clearance: 145mm / 5.7 in
Wet Weight: 244 kg / 537.9 lbs
Fuel Capacity: 22 Litres / 5.8 US gal
Consumption Average: 44.1 mph
Standing 1/4 Mile: 12.1 sec / 175.4 km/h
Top Speed: 193.1 km/h
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