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
SHL (motorcycle) SHL (motorcycle) SHL is a brand of Polish motorcycles, produced from 1938 until 1970 by Huta Ludwików, later KZWM Polmo-SHL in Kielce (small parties were made in the WFM in Warsaw). The Huta Ludwików ("Ludwików Ironworks"), founded in 1919 in Kielce, produced first hardware and agricultural machines. Since 1938 it started production of a motorcycle of own design, using British Villiers 98 cm³ engines (parts of engines were locally manufactured). The motorcycle was named SHL 98 - SHL being a short of "Suchedniowska Huta Ludwików" ("Ludwików Ironworks of Suchedniów", for the works were initially owned by a foundry in Suchedniów).