Categories: Yamaha

Yamaha XJ900 (1983-84)

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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