Pro Stock Motorcycle Pro Stock Motorcycle Pro Stock Motorcycle, formerly known as Pro Stock Bike, is a motorcycle drag racing class that is the two-wheeled equivalent of Pro Stock. It has been a feature of NHRA drag racing since the 1980s when it was added to the professional class structure and has since spread around the globe. The first points championship season was the 1987 NHRA season. The class has for years been dominated by inline-4 cylinder Suzuki based bikes but in recent years Harley-Davidson based V-twin machines have become more competitive due to favorable rule changes (160 c.i. Harleys vs. 107 c.i
Mars (motorcycle) Mars (motorcycle) Mars was a manufacturer in Nürnberg, Germany founded in 1873 that manufactured motorcycles in various periods from 1903 until 1958. Production was interrupted variously by the First World War, hyperinflation in the 1920s and the Second World War. When Mars ceased production for the final time in 1958, production of the 50 cc Monza Super Sport model was taken over by Gritzner-Kayser AG under its Gritzner brand. The most famous motocycles made by Mars were the series of motorcycles called the "Weiße Mars" ("White Mars"), which included the A 20, A 23, MA 25, MA 27, and MA