Yamaha XJ900 (1983-84)

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The Yamaha XJ900R Seca was first introduced in 1983 and was produced until 1984. It features a four-stroke, transverse four-cylinder DOHC engine, with a capacity of 853 cc and a compression ratio of 9.2:1. It has four 35mm Mikuni carburetors, CDI ignition, and an electric starter. The motorcycle has a maximum power output of 97 horsepower and a maximum torque of 80.2 Nm at 5000 rpm. The clutch is wet and has five springs, while the transmission is a five-speed manual. The final drive is a shaft.

The Yamaha XJ900R Seca has a steel tubular frame, with air-assisted telescopic forks at the front and twin strut gas-assisted, five spring preload, and 12 damping adjustable rear suspension. The front brakes are dual 254mm discs, and the rear brake is a single 254mm disc. The motorcycle has a 27-degree rake and a 120mm trail. It measures 2260mm in length, with a wheelbase of 1480mm and a seat height of 780mm.

The Yamaha XJ900R Seca has a wet weight of 244 kg and a fuel capacity of 22 liters. It can reach a top speed of 213km/h and do a standing quarter-mile in 11.8 seconds, reaching a speed of 112.3 mph. The motorcycle has a unique classic design that still captures the imagination of riders today.

Technical specifications:

Make Model: Yamaha XJ 900R Seca

Year: 1983 – 84


Engine: Four stroke, transverse four cylinder, DOHC, 2 valves per cylinder.
Capacity: 853 cc / 52 cu-in
Bore x Stroke: 67 60.5 mm
Cooling System: Air cooled
Compression Ratio: 9.2:1
Induction: 4x 35mm Mikuni carburetor
Ignition: CDI
Starting: Electric
Max Power: 97 hp / 70.8 Nm @ 9000 rpm
Max Torque: 80.2 Nm / 59.3 lb-ft @ 5000 rpm
Clutch: Wet, 5 springs
Transmission: 5 Speed
Final Drive: Shaft
Frame: Steel tubular
Front Suspension: Air assisted telescopic forks,

Rear Suspension: Twin strut gas assisted, 5 spring preload and 12 damping adjustable,
Front Brakes: 2x 254mm discs
Rear Brakes: Single 254mm 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
Standing 1/4 Mile: 11.8 sec / 112.3 mph
Top Speed: 213 km/h / 132.5 mph

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