It appears you're interested in specifications for the Polaris Sportsman 400 HO. This ATV model is powered by a H.O. is an abbreviation of High Output Single cylinder, four-stroke engine with 455.00 ccm (27.76 cubic inches) of actual displacement before compression. Fueling is metered via Carburettor allowing this machine to produce its horsepower and torque. According to our records engine heat of the Polaris Sportsman 400 HO is moderated by Liquid. You'll need to get familiar with the Automatic transmission and pay attention to final drive Shaft drive (cardan) maintainence. Our best information shows that the front tire size is 24/8-,12 and the rear is 24/11-,12 . The entire package is supported by the frame, Digital Gauge, Analog Speedometer, Odometer, Tachometer, Tripmeter.. We know you like to go fast or cruise all day, but when you need to stop, you'll be dependant on Single disc. Single Lever 4-Wheel Hydraulic Disc with Hydraulic Rear Foot Brake front brakes and Single disc rear brakes. The Polaris Sportsman 400 HO 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.