Based in Cascade, Maryland, Harshman Automotive turns racing and manufacturing ideas into machined components and finished automotive parts. Its work spans product development through production machining, with a catalog that includes specialized engine and cooling-system hardware such as billet water manifolds. The shop serves projects that call for both design know-how and practical racing experience.
Zipper’s Performance ProductsBorn from a short-track engine shop in 1978, Zipper’s Performance Products manufactures and distributes aftermarket performance parts for Harley-Davidson motorcycles while providing in-house engine-component machining from its Elkridge, Maryland facility. Racing remains central to the independently owned company, whose work includes CNC cylinder-head development and machine services shaped by competition experience. Zipper’s has served the performance motorcycle industry since establishing its first commercial location in 1981 and ships its products to customers worldwide.ELKRIDGE, MD
ATI Performance Products, IncFamily-owned and operated since 1961, ATI Performance Products makes high-performance racing components, with automatic transmissions and torque converters at the heart of its Baltimore-area operation. What began as Jim Beattie’s modest transmission rebuilding shop now includes in-house manufacturing, more than 30 CNC machines, and products tested on the drag strip by the Beattie family. ATI also holds more than a dozen U.S. government patents and builds specialized converter-rebuilding equipment alongside its racing parts.BALTIMORE, MD
Harford Systems, LLCFor more than 50 years, Harford Systems has turned USA-sourced metal into custom products through an engineering-driven fabrication process in Aberdeen, Maryland. Its team works from concept and 3D CAD design through prototyping and production, with a history that includes supplying Western Electric, GE, and Westinghouse. Harford Systems serves demanding applications across America, including automotive components and commercial culinary equipment.ABERDEEN, MD
Inter-Ion IncWith more than 25 years of machining experience, Inter-Ion Inc. combines precision machining and fabrication with engineered industrial coating and design services in Cuyahoga Falls, Ohio. Its engineers and machinists can take on a project from CAD design and prototyping through fabrication, coating and assembly, giving customers a single source for complex components. Inter-Ion also brings that combined expertise to custom hydraulic products, including manifolds and check valves.CUYAHOGA FALLS, OH