Kubota KX121-3 Tracks & Parts

Outfit your Kubota KX121-3 mini excavator with heavy-duty replacement rubber tracks built to OEM specs in size 350x54.5Nx86, backed by a 24-month warranty and free freight to the lower 48.

Specifications at a Glance

  • Track size: 350x54.5Nx86
  • Width: 350 mm
  • Pitch: 54.5 mm
  • Links: 86

Tread Patterns

  • Directional — The excavation specialist — directional tread optimized for digging and slope work.

Matched Undercarriage Components

Every wear part for the Kubota KX121-3 undercarriage, fit-verified and ready to ship:

Also Fits These Machines

These machines run the same 350x54.5Nx86 track, so this fitment crosses over:

The TrackTECH Difference

  • Premium virgin rubber — anti-chunk compound built for long service life in abrasive conditions.
  • Endless high-tensile cables — single-cure construction with no weak splice point.
  • Continuous steel cord — up to 40% stronger than typical aftermarket tracks, resisting stretch and de-tracking.
  • Precision OEM alignment — a reinforced roller path keeps running smooth and vibration low.

Upgrade your Kubota KX121-3 today. Order online for free freight, or call (850) 816-7898. Need a hand matching size and guide? Try the Track Finder.

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Kubota KX121-3 rubber tracks and undercarriage parts

Track sizes

Rubber tracks

  • 350x54.5Nx86 Rubber Track Directional replacement rubber track for compact construction equipment
    Kubota KX121-3 350x54.5Kx86 Non-Directional
    • Heavy Duty | 350x54.5Kx86
    $1,365.00$1,312.50

    In stock

    Add to quote

Built for Heavy Duty Use

Heavy-Duty Track Construction

Setting a new standard in heavy-duty performance. Find your exact fit, reduce avoidable downtime, and keep your machine working — not waiting.

  • Brand New

    New belts — not remills or retreads.

  • Heavy-Duty Steel Guides

    Precision-formed internal steel components support consistent sprocket engagement.

  • Continuous Steel Cord

    Continuous internal steel reinforcement supports belt strength under repeated load.

  • Premium Wear-Resistant Rubber

    Heavy-duty rubber construction built for abrasion and daily commercial use.

  • Precision Fitment

    Governed width, pitch, and link count for the machine application.

  • High-Traction, Low-Vibration

    Tread patterns matched to the jobsite.

Kubota KX121-3 fitment data

Machine Performance

Operating Weight9063 lb
Horsepower42 HP

Hydraulics & Lift

Standard Flow25 GPM

Fitment & Part Numbers

Track Size350x54.5x86
SprocketRD118-14433
IdlerRD118-21300
RollerRD118-21700
About Kubota KX121-3 Tracks & Parts

Replacement Kubota KX121-3 rubber tracks built for this mini excavator. Built for your machine — exact width, pitch, and lug profile — with high-tensile continuous steel cord for dominant strength and maximum traction.

  • Continuous steel cord for load strength and de-track resistance
  • Advanced rubber compound built for heavy-duty use
  • Maximum traction tread matched to your machine's working conditions
  • Anti-vibration ride for improved operator comfort

Fitment Confidence

Every order is OEM-verified with photo confirmation, so you know it fits before it ever leaves the dock. Call, text, or FaceTime us — real support, real people.

Certified 24-month warranty, free shipping, and dealer-direct pricing — Maximum Value Per Hour, jobsite after jobsite. Upgrade Today.

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Frequently Asked Questions

Common fitment, shipping, and rubber track replacement questions

Will this track fit my Kubota KX121-3?
Yes — this track is matched to the Kubota KX121-3 by size and tread pattern.
Are these OEM or aftermarket Kubota KX121-3 tracks?
OEM-grade aftermarket tracks built to factory fitment for the Kubota KX121-3 — same dimensions and guide type, continuous steel-cord belt, at a better price than dealer OEM.
Directional or block tread — which should I run?
For mixed dirt and gravel, most Kubota KX121-3 owners run a directional (multi-bar) tread for traction and mud release. Block tread wears better on hard surfaces and pavement.
What warranty comes with Kubota KX121-3 tracks?
Our rubber tracks carry a 24-month warranty against manufacturing defects, with continuous steel cords and wear-resistant compounds. Technicians by trade; heavy duty comes standard.