Kubota KX121-3 Rubber Tracks | 350x54.5x86
Heavy-duty 350x54.5x86 replacement rubber tracks for the Kubota KX121-3 mini excavator. This machine runs at 9,063 lb operating weight with a 42 hp engine. Available in Non-Directional tread.
Kubota KX121-3 Track Size
- 350x54.5x86: 350 mm (14 in) wide, 54.5 mm pitch, 86 links, about 456 lb each
Track size is width x pitch x links. Match all three to the marking on your existing tracks.
Tread Options
- Non-Directional: A non-directional lug layout for steady traction and smooth travel in either direction across dirt and mixed ground.
Built Heavy Duty
TrackTECH heavy-duty construction combines additional rubber wear material with continuous internal steel reinforcement to support repeated steering, travel, and abrasive jobsite conditions.
Kubota KX121-3 Details
- Operating weight: 9,063 lb
- Engine: 42 hp
- Model notes: Legacy. 4 ton.
- Warranty: 24 months
- Shipping: free to the contiguous US, typically 1-3 business days
- Returns: 90 days
Undercarriage Parts for the Kubota KX121-3
Tracks wear with the undercarriage. Inspect and replace worn parts together:
- Kubota KX121-3 / KX121-3S / KX121-3SS Bottom Roller #RD118-21700
- Kubota KX121-3 / KX121-3S Front Idler #RD118-21300
- Kubota KX121-3 / KX121-3S Sprocket #RD118-14433
- Kubota KX121-3 / KX121-3S Top Roller #RD411-22900
Ordering
Free shipping to the contiguous US, 90-day returns, and a 24-month warranty against manufacturing defects. Order Now.
ENGINEERED FOR THE JOBSITE
Built Tough
Heavy-duty replacement rubber tracks engineered for compact track loaders, tracked skid steers, mini excavators, mini track loaders, and demanding construction equipment applications.
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100% Virgin Rubber
Engineered to resist chunking, tearing, and cutting in harsh, abrasive environments.
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Continuous Steel Cords
Jointless internal cable architecture eliminates structural weak points and maximizes overall tensile strength.
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Drop-Forged Links
Precision heat-treated guide lugs ensure exact sprocket engagement and prevent de-tracking under heavy side-loads.
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Corrosion Resistant
The internal steel framework is fully encapsulated to prevent oxidation, rust, and moisture penetration.
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Reinforced Sidewalls
Extra-thick vulcanized rubber and tapered edge profiles protect against curb slashing and lateral impacts from jobsite debris.
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Low-Vibration Tread
Optimized lug spacing and pitch geometry absorb shock, reducing undercarriage wear and minimizing cabin vibration.
Frequently Asked Questions
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