Mini Excavator

Kubota KX121-3 Mini Ex Tracks

Fits track size: 101x45X350X46Lx67

Choose your tread pattern. OEM-grade, continuous steel cord, free freight.

24-Month Warranty Free Freight Same-Day Shipping Fleet Discounts
Kubota KX121-3 rubber tracks and parts
Machine Performance
  • Operating Weight9063 lbs
  • Horsepower42.0 HP
  • Track Size101x45X350X46Lx67
Hydraulics & Lift
  • Standard Flow25.0 GPM
OEM Reference Parts
  • Sprocket P/NRD118-14433
  • Front Idler P/NFIRD118-21300
  • Bottom Roller P/NRD118-21700

Kubota KX121-3 Mini Ex Tracks

Pick your track size (OEM fit: 101x45X350X46Lx67), then choose a tread pattern. OEM-grade continuous steel cord · free freight.

Kubota KX121-3 Mini Ex · 350x54.5x86

MX Pattern

Heavy-Duty Rubber Track

MX Pattern

Track Size: 350x54.5x86

$1,149.00$1,521.00Save $372.00

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Kubota KX121-3 Mini Ex Undercarriage

OEM-cross-referenced sprockets, idlers & rollers for the Kubota KX121-3. Drop-in fit for 101x45X350X46Lx67.

Kubota KX121-3 Mini Ex Sprockets

Part number depends on serial break — confirm your S/N before ordering.

Heavy-Duty Sprocket

Heavy-Duty Sprocket

Part #: SPRD118-14433

$209.00$239.00

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Kubota KX121-3 Mini Ex Front Idlers

Part number depends on serial break — confirm your S/N before ordering.

Heavy-Duty Front Idler

Heavy-Duty Front Idler

Part #: FIRD118-21300

$599.00$679.00

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Kubota KX121-3 Mini Ex Rollers

Part number depends on serial break — confirm your S/N before ordering.

Heavy-Duty Track Roller

Heavy-Duty Track Roller

Part #: CRRD411-22900

$129.00$149.00

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Heavy-Duty Track Roller

Heavy-Duty Track Roller

Part #: TRRD118-21700

$179.00$209.00

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Kubota KX121-3 Mini Ex Attachments

Excavator Pin-On mount for the Kubota KX121-3. Buckets, grapples, forks, brush cutters & more — selected for this machine.

Backhoe Heavy Duty Bucket

Attachment

Backhoe Heavy Duty Bucket

$495.00

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Kubota KX121-3 FAQs

Common questions about Kubota KX121-3 tracks, undercarriage parts, and attachments.

What size rubber tracks fit the Kubota KX121-3?
The Kubota KX121-3 commonly uses track size 101x45X350X46Lx67. Verify against your machine's existing track sidewall marking or OEM manual before ordering.
Are Heavy Iron tracks guaranteed to fit my Kubota KX121-3?
Yes. Every rubber track order requires you to confirm make and model at checkout. We cross-reference OEM specs and only ship when fitment is verified. Wrong-fit claims are covered under our fitment guarantee.
How fast do Kubota KX121-3 tracks ship?
Orders placed before 12PM CT ship the same business day. Rubber tracks ship free via LTL freight to the contiguous United States (48 states).
What tread patterns are available for the Kubota KX121-3?
We stock 1+ tread option for the Kubota KX121-3 — including C-Block, multi-bar, zig-zag, and directional patterns. See the tracks section above for live pricing.
Do you sell undercarriage parts for the Kubota KX121-3?
Yes — sprockets, idlers, rollers, and related steel undercarriage components are listed on this page when in stock. Need an OEM part number matched? Call (850) 816-7898 with your serial number.

Ready to outfit your Kubota KX121-3?

Need a part not listed? We source OEM-cross undercarriage and attachments for every major brand. Free freight and fleet pricing.

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Or call us at: (850) 816-7898