It appears you're interested in specifications for the Horex Regina 350. This Allround model is powered by a Single cylinder, four-stroke engine with 342.00 ccm (20.87 cubic inches) of actual displacement before 6.8:1 compression. Fueling is metered via Carburettor. Single Bing or amal allowing this machine to produce its 19.00 HP (13.9 kW) horsepower and torque. According to our records engine heat of the Horex Regina 350 is moderated by Air. You'll need to get familiar with the transmission and pay attention to final drive maintainence. Our best information shows that the front tire size is 3.25-19 and the rear is 3.25-19 . 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 Expanding brake (drum brake) front brakes and Expanding brake (drum brake) rear brakes. The Horex Regina 350 was launched in 1954, 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.