Cat Undercarriage Parts | Durable & High-Performance

Reliable undercarriage parts for Cat® equipment

Gmmco provides high-quality undercarriage parts for Cat equipment, ensuring optimal performance and durability in challenging environments.

Large Track Type tractor undercarriage

Up to 50% longer life than conventional designs

Blocks contaminants, keeps lubricating oil in.
Extends track life, lowers operating cost per hour
Available in Heavy XL SBT, Heavy Duty PPR, and General Duty tracks

Medium Track Type tractor

50% longer life than conventional designs
Reusable sprockets and idlers lasting up to 2 track lives
Available in System One, Heavy Duty, and General Duty tracks
Unique sealing system ensures superior protection with minimal repairs

Small Track Type tractor

30-50% longer life than standard designs
Idlers last up to 2 track lives, saving on downtime and parts
System One and sealed track options available
Less equipment downtime and more savings
Long life and low operating costs

Large excavator undercarriage

PPR2, non-PPR2, or heavy-duty cast and fabricated idlers available
Longer structural life for tough applications
Cat Moly Grease Track extends wear by 25%
Exclusive for excavators, increasing track life and lowering cost per hour

Small & medium undercarriage

Maximum internal wear life
Lowest cost per hour system available to customers
Highly polished to greatly reduce friction between internal surfaces
Longer system life and more value for customers

Cat undercarriage assurance program

Designed for structural integrity and sealability
Assurance covers 3,000-6,000 hours or 4 years, based on undercarriage type
Covers key components: links, rollers, idlers, and sprockets
Protects against failures like oil leaks, breakage, and sizing
Applies to new Cat® machines or replacement undercarriages, including other brands

Your on-demand service partner

8 hrs Response Time*

48 hrs Uptime Guarantee*

Remote Monitoring

Dedicated Customer Support

*T&C Apply

Frequently asked questions

Have a question? Refer to our FAQs for answers to your most common questions!

Cat’s quality and design drive system life. We offer unique products with extended life including SystemOne for many tractor models, deeper hardened links for D10/11, high abrasion undercarriage for D11, sleeve bearing track for D11, synthetic oil in components, post turn seals, positive pin retention, Chrome Nitride bushing end face coatings, consistent hardness depths and proper core hardness for component reusability. Dealers use Custom Track Service (CTS) to extend system life and support machine uptime and productivity.

Cat continually invests in methods to ensure and build quality into its manufacturing processes. Cat’s track sealability continues to be the best in the industry. We demonstrate our commitment to quality by providing Undercarriage Assurance to our customers.

The first and foremost goal of SystemOne is to provide our customers with differentiated product that provides the lowest owning and operating costs in the marketplace. At times, that means offering revolutionary product designs such as SystemOne which deliver unique benefits to customers.

Caterpillar’s cost per hour is less than other market alternatives even though the initial purchase price is higher. The cost per hour calculation is necessary is understanding overall product value. Cat’s components are reusable/rebuildable – bushings, track rollers and idlers. With the purchase of Cat parts comes the unmatched commitment and expert support from Caterpillar and its dealers. Undercarriage Assurance guarantees against leakage and breakage for an extended time period.

Cat Undercarriage Assurance is the best in the industry. The Cat dealer strives to inspect undercarriage at the end of the assurance period. Competitors frequently do not honor their stated coverage to the customer.