From humble beginnings in 1967, JIMS has grown into one of the industry leaders producing performance parts, accessories, tools, transmissions, and high-performance engines all aimed at enhancing the Harley rider’s experience. Originally, Jim Thiessen worked as a machinist with the aerospace industry. As bikes were brought to the shop in the early days for repairs and mechanical problems, customers would come to Jim looking for hard to find parts, or higher quality American made parts. In the mid to late 70’s Jim committed 100% to V-Twin Motorcycles. Developing parts and processes is his expertise, so naturally he developed a reputation for precision machining in the motorcycle industry. Starting with just a few manual mills and lathes, JIMS now occupies several buildings totaling 50,000 square feet filled with CNC machines.