PowerBore Cylinder Sleeves is a division of Quaker City Castings, located in Salem, Ohio. Our sleeves are manufactured for a wide array of applications, including standard automotive, truck pulling, tractor pulling, street racing, drag racing, cycle racing, marine drag, and all other high performance racing and engine applications. We can customize most sleeves based upon specific customer needs. We also produce industrial sleeves for compressors and other OEM equipment.