It appears you're interested in specifications for the KTM 390 Duke. This Naked bike model is powered by a Single cylinder, four-stroke engine with 373.20 ccm (22.77 cubic inches) of actual displacement before compression. Fueling is metered via Injection allowing this machine to produce its 44.00 HP (32.1 kW) horsepower and torque. According to our records engine heat of the KTM 390 Duke is moderated by Liquid. You'll need to get familiar with the 6-speed transmission and pay attention to final drive Chain maintainence. Our best information shows that the front tire size is 110/90-17 and the rear is 150/60-17 . The entire package is supported by the frame, Steel trellis frame, powder coated. We know you like to go fast or cruise all day, but when you need to stop, you'll be dependant on Double disc. ABS. Four-piston radial fixed calliper. front brakes and Single disc. ABS. Single-piston floating calliper. rear brakes. The KTM 390 Duke was launched in 2018, 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.