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
Motorcycle club oriented clubs such as the Christian Motorcyclists Association, a biker ministry, charities such as Freewheelers EVS, which use motorcycles to provide an out-of-hours emergency medical courier service, and clubs which attract membership from specific groups, such as the Blue Knights Law Enforcement Motorcycle Club, for law enforcement personnel. One of the first motorcycle clubs was the New York Motorcycle Club, which in 1903 merged with the Alpha Motorcycle Club of Brooklyn to become the Federation of American Motorcyclists. Later, the Motorcycle and Allied Trades Association (M&ATA) formed a Rider Division which spun off into the American Motorcyclist Association. The American