Headquartered in Brookston, Indiana, Terra Drive Systems, Inc. (TDS) is a global manufacturing company and leading developer of steerable hydraulic drive systems for agricultural equipment, medium-to-heavy-duty trucks and more. Throughout our history, we have maintained industry-leading design and engineering capabilities, resulting in the consistent development of highly-functional, superior-quality products. Day in and day out, we work tirelessly to maintain our reputation as keen innovators who routinely present our customers with game-changing solutions. Our brands include:

Mud Hog

Mud Hog hydraulic rear-wheel drive systems provide self-propelled, front-wheel drive farming equipment with four-wheel drive technology.

EZ Trac

EZ Trac hydraulic front-wheel drive systems equip rear-wheel drive medium-to-heavy-duty trucks with all-wheel drive capability.