Kubota KX040-4 Rubber Tracks & Parts

The Kubota KX040-4 takes a 350 mm track, but it was built with more than one pitch — 52.5 and 54.5 mm. Same width, different drive-lug spacing, and they do not swap. Check the old track or the sprocket before ordering. Free freight to the lower 48, 24-month warranty.

Kubota KX040-4 track options

  • 350x54.5x86 — 350 mm (14") wide, 54.5 mm pitch, 86 links
  • 350x52.5x86 — 350 mm (14") wide, 52.5 mm pitch, 86 links

Same tread width on all of them — what changes is pitch and link count, which is set by the sprocket and roller frame. Read the numbers off the inside of the old track rather than going by model year; these were built across more than one undercarriage spec.

Tread choice for the Kubota KX040-4

Size gets the track on the machine; tread decides how it works and how long it lasts. What we stock for this one:

  • Non-Directional — turf and finished surfaces. Minimal ground disturbance

Kubota KX040-4 at a glance

  • Operating weight — 9,460 lb
  • Engine — 36 hp

Undercarriage parts for the Kubota KX040-4

Rollers, idlers and sprockets wear on the same clock as the track. Fitting new rubber over a hooked sprocket or a seized roller is the fastest way to lose the new track — check these while the tracks are off:

How these wear

Excavator undercarriages load one side hard on slew and travel, so link cracking usually shows up before the tread wears out. Replace in pairs where you can: a new track running against a stretched one loads the drive unevenly and you will feel it in the steering.

Same track, other machines

Track size follows undercarriage geometry, not brand, so one of these sizes shows up on machines from several makers. If you run any of these alongside the Kubota KX040-4, it is the same belt:

Not sure which you are running? Read the size off the inside of the old track, or call (850) 816-7898 and we will pull it off the machine record. The Track Finder works by make and model too.

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Kubota KX040-4 mini excavator

Track sizes

Heavy-Duty Rubber Tracks for KX040-4

  • 350x54.5Nx86 rubber track
    Kubota KX040-4 350x54.5x86 350x54.5x86
    • Heavy Duty | 350x54.5x86
    $1,365.00$1,312.50

    In stock

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  • 100% Virgin Rubber

    Engineered to resist chunking, tearing, and cutting in harsh, abrasive environments.

  • Continuous Steel Cords

    Jointless internal cable architecture eliminates structural weak points and maximizes overall tensile strength.

  • Drop-Forged Links

    Precision heat-treated guide lugs ensure exact sprocket engagement and prevent de-tracking under heavy side-loads.

  • Corrosion Resistant

    The internal steel framework is fully encapsulated to prevent oxidation, rust, and moisture penetration.

  • Reinforced Sidewalls

    Extra-thick vulcanized rubber and tapered edge profiles protect against curb slashing and lateral impacts from jobsite debris.

  • Low-Vibration Tread

    Optimized lug spacing and pitch geometry absorb shock, reducing undercarriage wear and minimizing cabin vibration.

Kubota KX040-4 Rubber Tracks & Parts fitment data

Machine Performance

Operating Weight9460 lb
Horsepower36 HP
ROC / Bucket Force10200 lb

Hydraulics & Lift

Standard Flow15 GPM

Fitment & Part Numbers

Track Size350x54.5x86
SprocketS
IdlerF
RollerT

Real Kubota KX040-4 Track Installs

Upgrade your equipment with confidence. Proven and trusted by contractors nationwide—click any jobsite photo below to shop the exact tread pattern your machine demands.

Kubota KX040-4 mini excavator with TrackTECH 350x54.5Nx86 directional tracks — outdoor install.

Kubota KX040-4

Track Size: 350x54.5x86

Featured Tread: Directional

Shop verified-fit rubber tracks and undercarriage parts for the Kubota KX040-4 mini excavator. Merchant-confirmed sizes on this hub: 350 x 54.5 x 86. Available tread families include Non-Directional. When more than one size applies, match the undercarriage configuration rather than guessing from model alone.

Frequently Asked Questions

What size rubber tracks fit a Kubota KX040-4?
The Kubota KX040-4 can use 350x54.5x86 rubber tracks. Match the full size on the track you are replacing before you order. If your machine has more than one track setup, choose the width and guide style that matches the track currently on the machine.
Which tread patterns are available for the Kubota KX040-4?
Once the size is confirmed, choose the tread for the work the machine actually does. This Kubota KX040-4 page currently includes Nd. Use the tread pattern guide to compare traction, ride, cleanout, and wear before choosing a pattern.
Does TrackTECH carry undercarriage parts for the Kubota KX040-4?
Yes. When a matched part is available, this Kubota KX040-4 hub can show the drive sprocket, front or rear idlers, and rollers alongside the tracks. If you're replacing tracks, inspect the undercarriage at the same time—worn sprockets or rollers can shorten the life of a new set. You can also browse undercarriage parts.
Do Kubota KX040-4 tracks ship free?
Qualifying in-stock rubber track orders ship free by LTL to the lower 48. Same-day dispatch is available on qualifying in-stock orders placed before 12 PM CT; the actual delivery window depends on the exact item and ZIP code. See the shipping policy for details.
What warranty applies to TrackTECH rubber tracks?
TrackTECH rubber tracks on this hub are covered by the published 24-month / 1,500-hour warranty. Keep your proof of purchase and make sure fitment is confirmed before installation. See the warranty terms for coverage and claim requirements.