Roehr Motorcycle Company hp 936cc 60° 4-stroke V-twin manufactured by US Highland was revealed in 2004. Roehr introduced the V-Roehr production motorcycle in March 2007. The bike was to be powered by a 180 hp supercharged Harley Davidson 1250 cc "Revolution" engine. Production of the first 50 bikes was scheduled to begin in 2008. Roehr Motorcycle Company Roehr Motorcycle Company was a US motorcycle manufacturer based Gurnee, Illinois. It closed down in 2012. In 1995 Walter Roehrich began construction of the 500 cc two stroke v-twin motorcycle, using Yamaha YZ250 engine parts on a prototype crankcase. The result was the 115 hp Roehr
Motorcycle engine experimented over a period of two years with its dual-overhead-cam 500 cc V8, the Otto Cylindri, in the 1950s. Some custom and one-off motorcycles use more than six cylinders. For example, the Boss Hoss motorcycle uses (5,700 cc, 6,000 cc and 8,200 cc) Chevrolet V-8 crate motors. In 2003 Daimler-Chrysler manufactured a limited number of Tomahawk concept vehicles with a Dodge Viper V-10 engine. Australian company Drysdale have built short runs of 750 cc V8 superbikes and 1L V8 roadgoing motorcycles, both with engines specifically developed for the purpose. No major motorcycle manufacturer has used eight or more cylinders, although