These are the known mechanical and performance specifications for your 1984 Yamaha XS 400 DOHC.
ModelYamaha XS 400 DOHC
Displacement399.00 ccm (24.35 cubic inches)
Bore/Stroke69.0 x 53.4 mm (2.7 x 2.1 inches)
Horespower45.00 HP (32.8 kW)
Top Speed168.0 km/h (104.4 mph)
Fuel Economy & Polution
Fuel Capacity18.00 litres (4.76 gallons)
Alt. Seat Height
Wet Weight187.0 kg (412.3 pounds)
Wheels & Brakes
Front BrakesSingle disc
Front Brake Diameter
Rear BrakesExpanding brake
Rear Brake Diameter
It appears you're interested in specifications for the Yamaha XS 400 DOHC. This Sport touring model is powered by a Twin, four-stroke engine with 399.00 ccm (24.35 cubic inches) of actual displacement before 9.7:1 compression. Fueling is metered via allowing this machine to produce its 45.00 HP (32.8 kW) horsepower and torque. According to our records engine heat of the Yamaha XS 400 DOHC is moderated by Air. You'll need to get familiar with the 6-speed transmission and pay attention to final drive Chain maintainence. Our best information shows that the front tire size is 3.00-18 and the rear is 4.10-18 . The entire package is supported by the frame, . We know you like to go fast or cruise all day, but when you need to stop, you'll be dependant on Single disc front brakes and Expanding brake rear brakes. The Yamaha XS 400 DOHC was launched in 1984, and we're happy to know (or assume) you've got one in your garage. To help you keep your ride in tip-top shape, consider purchasing an owner or service manual.