C-Block Tracks
C-block rubber tracks built for dependable traction, durability, and daily performance across dirt, gravel, clay, and mixed construction jobsite conditions.
Keep your Komatsu PC40MR in the dirt with precision-fit 400x72.5Nx72 tracks and matched undercarriage parts. OEM-quality build, 24-month warranty, free freight.
Tread Options for the Komatsu PC40MR
- Directional — The excavation specialist — directional tread optimized for digging and slope work.
Complete the Komatsu PC40MR Rebuild
Pair your tracks with the right undercarriage parts for the Komatsu PC40MR:
- Front Idler — OEM Part #9237507
- Top Roller — OEM Part #9239529
Also Fits These Machines
Looking for another machine? The 400x72.5Nx72 size also fits:
The TrackTECH Difference
- Drop-forged steel links for strength where the track meets the drive system.
- Continuous steel cord — up to 40% stronger than typical aftermarket tracks, resisting stretch and de-tracking.
- Premium virgin rubber — anti-chunk compound built for long service life in abrasive conditions.
- Precision OEM alignment — a reinforced roller path keeps running smooth and vibration low.
Upgrade your Komatsu PC40MR today. Order online for free freight, or call (850) 816-7898. Need a hand matching size and guide? Try the Track Finder.
Direct Replacement Rubber Tracks for the Komatsu PC40MR
Direct replacement rubber tracks for the Komatsu PC40MR are built for heavy-duty compact equipment applications where traction, stability, and uptime matter. These tracks are designed for dependable grip, smooth travel, and consistent performance across dirt, clay, gravel, demolition debris, utility work, grading, land clearing, excavation, and mixed jobsite terrain.
Heavy-Duty Construction for Daily Work
Premium virgin rubber compounds help resist tearing, chunking, cracking, dry rot, and premature tread wear under demanding field conditions. Continuous steel cord reinforcement adds internal strength, helps reduce stretching, and supports stable track performance through repeated turning, travel, and loading.
OEM Fit Guarantee
Machine-specific sizing, steel link spacing, and guide lug geometry are built for proper undercarriage engagement on the Komatsu PC40MR. Precision-aligned fitment helps support smooth travel, stable tracking, reduced vibration, and reliable sprocket contact.
Built to Protect the Undercarriage System
A well-built rubber track helps improve machine control while limiting unnecessary stress on rollers, idlers, and sprockets. For contractors running Komatsu equipment, that means better ride quality, stronger traction, less downtime, and better value over the life of the track.
Frequently Asked Questions
What size rubber track does the Komatsu PC40MR use?
The Komatsu PC40MR uses a 400x72.5Nx72 rubber track. Note the N (narrow guide) guide-lug type — other guide types won't seat correctly on the rollers. Always confirm against your current track or the machine's spec plate, since some units shipped with more than one option.
Will this track fit my Komatsu PC40MR?
Yes — this track is matched to the Komatsu PC40MR by size and tread pattern. If your machine has a serial break or factory option, send the serial number and we'll verify fitment before shipping.
How do I confirm the right track size for my Komatsu PC40MR?
Read the size stamped on the inside of your current track, or measure width x pitch x links. Not sure? Message us and we'll match it.
Do you stock undercarriage parts for the Komatsu PC40MR?
Yes — along with the rubber track we carry front idlers, top rollers for the Komatsu PC40MR, so you can refresh the whole undercarriage in one order.
Do Komatsu PC40MR tracks sell in pairs?
Tracks are priced individually; a full machine needs two. Most owners replace both at once so wear stays even.
