Yamaha xj400Z (1983)

The Yamaha XJ 400Z-S motorcycle was produced in 1983 and comes with a liquid-cooled, four-stroke, four-cylinder engine. The engine has a displacement of 399cc and comes with a bore and stroke of 54mm and 53.6mm, respectively. The engine features a double overhead camshaft and four valves per cylinder. It comes with a 10.5:1 compression ratio and a carburetor induction system. The ignition is transistorized CDI, and the bike has electric start.

The motorcycle has a maximum power output of 55 horsepower at 11,500 rpm and can produce a peak torque of 3.5 kgf-m at 10,000 rpm. It has a six-speed transmission and a chain final drive. The front suspension features telescopic forks, and the rear suspension is monocross, link-type. The front brakes have two discs, while the rear uses a single-disc setup. The front and rear tires have sizes of 90/90-18 and 110/90-18, respectively.

The XJ 400Z-S has a wheelbase of 1420mm and weighs 179 kg. The fuel tank has a capacity of 19 liters or 5.0 US gallons.

Technical specifications:

Make Model: Yamaha XJ 400Z-S

Year: 1983
Engine: Four stroke, transverse four cylinder, DOHC, four valve per cylinder
Capacity: 399 cc
Bore x Stroke: 54 ~A | 53.6 mm
Cooling System: Liquid cooled
Compression Ratio: 10.5:1
Induction: Carburator
Ignition: Transistorized CDI
Starting: Electric
Max Power: 55 hp / 41kW @ 11500 rpm
Max Torque: 3.5 kgf-m / 25.3 lb-ft @ 10000 rpm
Transmission: 6 speed
Final Drive: Chain
Front Suspension: Telescopic forks
Rear Suspension: Monocross, link type
Front Brakes: 2x discs
Rear Brakes: Single disc
Front Tyre: 90/90-18
Rear Tyre: 110/90-18
Wheelbase: 1420 mm / 55.9 in
Dry Weight: 179 kg / 394.6 lbs
Fuel Capacity: 19 Litres / 5.0 US gal