Need a FASTER or more reliable dirtbike or atv? Let Pro Circuit build it with Performance Exhaust Systems, Engine Mods, Suspension ReValving and bolt on Accessories making your stock bike a near FACTORY race machine!
Boyesen Engineering offers the most advanced intake innovations available for two-stroke and four stroke engines. Our Power Reeds, Pro Series Reeds, Quick Shot, Rad Valves and other unique products add performance and value to the motorcycle, snowmobile, watercraft and outboard marine industries. At Boyesen, R&D is hands-on, tested in the field, and tied to feedback from the end user. We use the latest computerized testing and manufacturing processes available in the industry. From research through production, Boyesen is committed to using creative concepts, new materials, and better designs that will increase the satisfaction and enjoyment of our customers.