Profile: Palmer Johnson Power Systems, LLC specializes in servicing and supplying components for heavy-duty, off highway transmissions and axles. We operate volume OEM transmission and axle remanufacturing programs. We maintain an extensive inventory of Twin Disc units and genuine Twin Disc replacement parts. We carry heavy-duty powershift transmissions, marine gears, power take-offs, hydraulic PTOs, clutches, pump drives, torque converters and other power transmission components.