It appears you're interested in specifications for the Suzuki Boulevard S50. This Custom / cruiser model is powered by a V2, four-stroke engine with 819.40 ccm (50.00 cubic inches) of actual displacement before 10.0:1 compression. Fueling is metered via allowing this machine to produce its horsepower and torque. According to our records engine heat of the Suzuki Boulevard S50 is moderated by Liquid. You'll need to get familiar with the 5-speed transmission and pay attention to final drive Shaft drive (cardan) maintainence. Our best information shows that the front tire size is 100/90-M19 and the rear is 140/90-M15 . 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 Single disc front brakes and Expanding brake (drum brake) rear brakes. The Suzuki Boulevard S50 was launched in 2009, 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.