Profile: Defiance Precision Products is a supplier of cam follower rollers, roller axles and other specialty anti-friction bearings & precision-machined components. Our products improve the efficiency and performance of both gas & diesel engines. We also provide a wide variety of bar machine products, such as bushings, spacers, shafts & other cylindrical parts. We deliver heat treatment, precision grinding and other secondary operation services. Our products are applied in automotive, heavy truck, motorcycle and sport vehicle applications.