
Choosing the right undercarriage for your Cat® equipment is critical for achieving the versatility, efficiency, and power you need for success. Cat General-Duty Undercarriages balance value with performance, while Heavy-Duty Extended Life Undercarriages are ideal for demanding terrain in the harshest applications.
Thompson Tractor has all your undercarriage needs covered, whether you shop for parts from our online store or schedule service at one of our convenient locations throughout Alabama and northwest Florida.
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Comprehensive Cat Undercarriage Parts and Service
Discover the most suitable undercarriage to meet your operational requirements. Our vast parts inventory includes undercarriage components for old and new machinery, including Cat dozers, loaders, and excavators. Trust our knowledgeable, experienced team to provide you with all the technical information you need when choosing the optimal parts for your application.

Heavy Duty Extended Life Undercarriage With Dura Link
Tackle the most rigorous terrain without breaking and get 20% – 40% longer wear life with Cat Heavy Duty Extended Life Undercarriage with Dura Link. The patented Caterpillar design with larger diameter bushing and higher core hardness provides more wear life for high abrasion applications. Available for D8 and D10 models.
Dozer Track Undercarriage Parts From Caterpillar
Caterpillar manufactures undercarriage parts from the highest-quality materials to meet the most demanding industry standards. Thompson Tractor can provide you with all the necessary parts for repairing, maintaining, or rebuilding your equipment. We offer an extensive inventory, from the rubber tracks that propel your machines to the dozens of components that keep them in place. We’re committed to providing the service you need to keep your equipment running in peak condition.

It’s All About Moving More Material, More Efficiently.
The more precisely the iron matches the application, the more effective and efficient your work will be. We design and manufacture our own undercarriage and continue to develop new innovations to keep your uptime up and your O&O costs down.
25% longer wear life.
Cat Heavy Duty Extended Life System Undercarriage with DuraLink will tackle the most rigorous terrain. And Caterpillar warranty, Undercarriage Assurance Programs, and global Cat dealer support ensure responsive service and long life.
- Field proven Positive Pin Retention (PPR) track design
- Larger diameter bushing gives 25% more wear life for high abrasion applications
- Higher bushing core hardness for slower wear rate
- Uses existing D8 and D10 Heavy Duty idlers, rollers, track guides, track shoes, and hardware
- Different pitch sprocket segment required
- Crowned link for reduced link scalloping and improved ride late in wear life
- Longer pitch DuraLink allows for direct compatibility with SystemOne equipped machines
- Easily retrofitable on non-SystemOne machines
- Available for D8 and D10 Track-Type Tractors

Choosing the Right Cat Undercarriage Parts
At Thompson Tractor, we ensure parts compatibility to provide the perfect fit for your Cat equipment. Explore our wide selection of genuine undercarriage parts that maintain sturdy, reliable support for your heavy equipment. We offer OEM parts manufactured by Caterpillar for the highest quality components with warranties. If you need assistance picking the right component, our parts department can help to save you time and effort.
Why Trust Thompson Tractor for Cat Undercarriage Parts?
Thompson Tractor is your trusted Cat dealer in Alabama and northwest Florida. Rely on us to provide you with exceptional service and support for your equipment needs. We also offer comprehensive support through our Undercarriage CVA program, designed to help you proactively manage wear, reduce downtime, and extend the life of your undercarriage.
Choose Thompson Tractor for Cat Undercarriage Parts and Service Today
If you need an undercarriage rebuild or additional parts to get your machine running efficiently and performing optimally, Thompson Tractor is here for you. Our team is ready to help you find the solutions you need. Call us at 800-547-0760 to request a quote or visit a dealer near you today.