Complex sentence: It went on to build 441 motorcycles until Feburary 3rd 1993 when Harley Davidson bought 49% of the bussiness and a new company called the "Buell Motorcycle Company" was formed and went on to built well over 100 thousand Buell motorcycles until it closed in 2009.
Split into simpler sentences: It went on to build 441 motorcycles until Feburary 3rd 1993 when a new corporation was formed called the Buell Motorcycle Company, 49% of which was owned by Harley-Davidson. It then went on to built well over 100 thousand Buell motorcycles until it closed in 2009.