Terra Drive Systems (TDS) continues to design, engineer and manufacture drive systems for agricultural equipment and medium- to heavy-duty work trucks for OEMs and the aftermarket worldwide. TDS engineers and manufactures hydraulic axles, non-powered axles and other components. TDS is comprised of two brands, Mud Hog and EZ Trac. Mud Hog hydraulic rear-wheel drive systems provide self-propelled, front-wheel drive farming equipment with four-wheel drive technology. EZ Trac hydraulic front-wheel drive systems equip rear-wheel drive medium-to-heavy duty trucks with all-wheel drive capability. With over 40 years of experience in the industry, we DRIVE the brands you drive!