It appears you're interested in specifications for the Yamaha XJ 750 Maxim X. This Sport touring model is powered by a Four cylinder boxer, four-stroke engine with 749.00 ccm (45.70 cubic inches) of actual displacement before 11.2:1 compression. Fueling is metered via Carburettor. (4) Standard BS33mm Mikuni cv allowing this machine to produce its 90.00 HP (65.7 kW) horsepower and 7.40 Nm (0.8 kgf-m or 5.5 ft.lbs) torque. According to our records engine heat of the Yamaha XJ 750 Maxim X is moderated by Liquid. You'll need to get familiar with the transmission and pay attention to final drive Shaft drive (cardan) maintainence. Our best information shows that the front tire size is 1/-19-57H and the rear is 1/-16-67H . The entire package is supported by the frame, Double Cradle. We know you like to go fast or cruise all day, but when you need to stop, you'll be dependant on Double disc. 4 piston caliper front brakes and Expanding brake (drum brake). Drum Brake rear brakes. The Yamaha XJ 750 Maxim X was launched in 1986, 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.