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Komatsu Genuine Undercarriage


Keep Your Machines Working Longer


Your undercarriage can account for up to 50% of lifetime maintenance costs and directly impacts performance, uptime, and total cost of ownership. A Komatsu Genuine Undercarriage is engineered as a complete system to reduce wear and keep your equipment working longer—even in tough conditions.

Get the right solution for your excavators, dozers, forestry machines, and specialty equipment, backed by expert support and flexible financing options to help you manage costs with confidence.

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Why Komatsu Undercarriage?


  Precision fit for optimal performance

  Proven reliability to keep you running longer

  Backed by Komatsu engineering and industry-leading warranty
 
 

Compare Komatsu Undercarriage Arrangements

Undercarriages are not one size fits all. It’s essential that your machine has the right undercarriage for your application and the conditions you work in.

Conventional / Standard
Komatsu Undercarriage


Designed for versatility and durability, conventional Komatsu undercarriages perform reliably across a wide range of applications. Built with hardened components and sealed systems, it delivers long wear life, reduced downtime, and consistent performance to maximize your productivity and help you better manage operating costs.

Application Type: Works well in all applications

Features:
  • Deep-hardened links and bushings extend wear life
  • Sealed and lubricated design minimizes internal wear
  • Precision-engineered for balanced performance and durability

Machine Compatibility:
  • Dozers: D37, D39, D51, D61, D65, D71, D85, D155
  • Excavators: PC138 – PC1250

Coverage: 4 years or 5,000 hours — Komatsu Undercarriage Assurance
 

Questions about Komatsu Conventional Undercarriage?

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General Construction (GC)
Komatsu Undercarriage


General Construction undercarriage offers a cost-effective solution for light to medium-duty applications. GC delivers dependable performance and reduced upfront cost, making it ideal for customers focused on value without compromising reliability.

Application Type: Light to medium-duty applications. Not recommended for high-impact environments such as waste, forestry, quarry, or mining.

Features:
  • Sealed and lubricated link assemblies reduce internal wear
  • Komatsu-engineered pins and bushings designed for long life
  • Optimized design lowers ownership costs in lighter applications

Machine Compatibility:
  • Dozers: D39, D51, D61, D65, D71, D155
  • Excavators: PC138 – PC490

Coverage: 4 years or 5,000 hours — Komatsu Undercarriage Assurance
 

Questions about Komatsu GC Undercarriage?

Speak with an Expert

Parallel Link Assembly (PLUS)
Komatsu Undercarriage


PLUS undercarriage is designed for demanding, high-abrasion applications. Its rotating bushing system distributes wear evenly, extending component life and reducing downtime. It’s the premium choice for maximizing uptime and lowering long-term costs.


Application Type: All applications, especially high abrasion

Features:
  • Rotating bushings promote even wear and longer life
  • Robust link design withstands extreme conditions
  • Sealed and lubricated system protects internal components

Machine Compatibility:
  • Dozers: D37, D39, D51, D61, D65, D71
  • PLUS undercarriage is not compatible with Komatsu excavators

Coverage: 5 years or 6,000 hours — Komatsu Undercarriage Assurance
 

Questions about Komatsu PLUS Undercarriage?

Speak with an Expert

PLUS Fit Assembly
Komatsu Undercarriage


PLUS Fit provides a cost-effective solution when replacing worn PLUS links while retaining usable shoes and rollers. This option helps you extract maximum value from existing components, reducing replacement costs and lowering your cost per hour.

Application Type: Light to medium-duty applications. Not recommended for high-impact environments such as waste, forestry, quarry, or mining.

Features:
  • Fixed bushing design allows reuse of PLUS components
  • Sealed and lubricated links extend internal wear life
  • Lower-cost alternative that preserves remaining component value

Machine Compatibility:
  • Dozers: D39, D51, D61, D65, D71
  • Plus Fit undercarriage is not compatible with Komatsu excavators

Coverage: 4 years or 5,000 hours — Komatsu Undercarriage Assurance
 

Questions about Komatsu PLUS Fit Assembly Undercarriage?

Speak with an Expert

Current Promotions

Expires September 30, 2026
Pay No Interest on Komatsu Undercarriage for 24 Months

Offer valid throughout Canada with exclusions applying to specific regions.

Expires June 30, 2026
Save up to 40% on Komatsu Undercarriage

Offer is valid across Canada, excluding Nova Scotia, GTA & Southern Ontario.

Free Komatsu Undercarriage Inspection

We measure every critical component and provide a detailed report outlining current wear and remaining life. You’ll receive clear recommendations and a plan that helps you schedule maintenance, reduce downtime, and control costs with confidence.

Komatsu Undercarriage Frequently Asked Questions

Contact SMS Equipment’s parts department. Our trade-certified experts verify the correct Komatsu Genuine parts for your specific dozer or excavator to ensure proper fit.

Yes. SMS Equipment branches across Canada (excluding Nova Scotia and Southern Ontario) carry a large inventory of available parts and strong support for Komatsu undercarriage. Contact your SMS Equipment representative or nearest branch for additional information.

It’s not recommended. Undercarriage works as a complete system. Mixing components can reduce performance, accelerate wear, and increase overall ownership costs.

Life expectancy varies based on application, ground conditions, operator habits, and shoe selection. Regular inspections can help maximize service life by identifying issues and addressing them before they become catastrophic and costly.

Yes, Sprockets directly affect chain life and must be replaced to ensure protection under the Komatsu Undercarriage Assurance program.

No. Shoe life and chain life can differ. An inspection will confirm whether the existing chain can continue to perform reliably.

Yes, but wider shoes can impact undercarriage life. Proper bolt-hole patterns and compatibility are critical—SMS Equipment can confirm the correct configuration.

Yes. SMS Equipment can supply shoes with mud holes to improve material release in wet or sticky conditions.