Custom Cylinders International, Incorporated, is a hydraulic cylinder manufacturer, manufacturing custom designed hydraulic and pneumatic cylinders for specialized or engineered equipment. Examples include recreational vehicle slide outs, RV leveling systems for motor homes, raising pop up camper roofs, automotive lifts, log splitters, farm equipment, and hospital equipment. Additional products are paintball barrels, recreational vehicle stabilizing jack sockets, and tobacco baler systems.

Product trade names sold by Custom Cylinders International, Inc. include the Roof Jenie hydraulic systems, Socket Jenie sockets, Level Jenie levelers, and the Cool Cleeve from MICO.

CCI produces low and high pressure designs, medium to high volume quantities, 1" to 10" bore, and custom designs for many types of equipment. In addition to the manufacturing operations, CCI operates a separate Division that offers repair and re-manufacturing services for pumps, valves, systems, and cylinders used on mobile and industrial equipment.