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
Sun (motorcycle) Sun (motorcycle) The Sun Cycle & Fittings Co. Ltd. was an English manufacturer of motorcycles, mopeds and bicycles. The company was based in Aston, Birmingham. The company was founded as James Parkes & Son, a brass foundry producing lamp fittings and various other products. In 1885 the company started to manufacture frames and fittings for the bicycle trade. In 1897, the company became The Sun Cycle & Fittings Company Limited, and around the same time began making its own bicycles. The first Sun motorcycle was produced in 1911. The company was taken over by Tube Investments in 1958, and in