It appears you're interested in specifications for the Vespa GTS 300. This Scooter model is powered by a Quasar engine Single cylinder, four-stroke engine with 278.00 ccm (16.96 cubic inches) of actual displacement before compression. Fueling is metered via Injection. Port injection allowing this machine to produce its 21.10 HP (15.4 kW) horsepower and 22.30 Nm (2.3 kgf-m or 16.4 ft.lbs) torque. According to our records engine heat of the Vespa GTS 300 is moderated by Liquid. You'll need to get familiar with the Automatic transmission and pay attention to final drive Belt maintainence. Our best information shows that the front tire size is 120/70-12 and the rear is 130/70-12 . The entire package is supported by the frame, Load-bearing sheet steel chassis. We know you like to go fast or cruise all day, but when you need to stop, you'll be dependant on Single disc. ABS. Hydraulic. front brakes and Single disc. ABS. Hydraulic. rear brakes. The Vespa GTS 300 was launched in 2016, 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.