Oxford Rok Drop Sparkie Knee Sliders (BLACK) Oxford Products U.S.A. Inc. is the company behind Oxford Essential Rider Equipment, the U.S. subsidiary of Oxford Products Ltd, the U.K.'s leading supplier of motorcycle and cycle accessories exporting to over sixty distribution partners worldwide. The company's market-leading products are designed at its purpose-built 100,000 square-foot Oxfordshire, U.K., headquarters by a team of active enthusiasts who test and develop the range.