It appears you're interested in specifications for the Yamaha Jupiter Z1. This Scooter model is powered by a Single cylinder, two-stroke engine with 113.50 ccm (6.93 cubic inches) of actual displacement before 9.3:1 compression. Fueling is metered via Injection allowing this machine to produce its 13.49 HP (9.8 kW) horsepower and 9.90 Nm (1.0 kgf-m or 7.3 ft.lbs) torque. According to our records engine heat of the Yamaha Jupiter Z1 is moderated by Air. You'll need to get familiar with the 4-speed transmission and pay attention to final drive Chain maintainence. Our best information shows that the front tire size is 70/90-M17 and the rear is 80/90-M17 . The entire package is supported by the frame, Underbone. We know you like to go fast or cruise all day, but when you need to stop, you'll be dependant on Single disc. Hydraulic. front brakes and Expanding brake (drum brake) rear brakes. The Yamaha Jupiter Z1 was launched in 2017, 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.