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
Vento (motorcycle manufacturer) Yamaha, Suzuki, Honda and Kawasaki combined. Vento products were approved by the National Highway Traffic Safety Administration (United States Department of Transportation), and certified by both the United States Environmental Protection Agency and the California Air Resources Board, meeting the emission regulations. Vento motorcycles have somewhat bulky bodies which resemble larger cruisers made by other manufacturers, but their V-twin 250 cc engines are comparatively small. Though large, the Vento motorcycles are not particularly heavy—typically around 375 pounds. Vento (motorcycle manufacturer) Vento was a motorcycle, scooter and ATV manufacturer from the United States. The name of the company is Italian for