It appears you're interested in specifications for the Cectek Estoc 500 EFI. This ATV model is powered by a Single cylinder, four-stroke engine with 500.00 ccm (30.51 cubic inches) of actual displacement before compression. Fueling is metered via Injection allowing this machine to produce its horsepower and torque. According to our records engine heat of the Cectek Estoc 500 EFI is moderated by Liquid. You'll need to get familiar with the transmission and pay attention to final drive Belt maintainence. Our best information shows that the front tire size is 195/45-R15 and the rear is 205/55-R15 . 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 Double disc. Hydraulic front brakes and Double disc. Hydraulic rear brakes. The Cectek Estoc 500 EFI was launched in 2011, 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.