CAT 303ECR Rubber Tracks | 300x52.5Wx84
Heavy-duty 300x52.5Wx84 replacement rubber tracks for the CAT 303ECR mini excavator. Available in Block tread.
CAT 303ECR Track Size
- 300x52.5Wx84: 300 mm (12 in) wide, 52.5 mm pitch, 84 links (W guide), about 306 lb each
Track size is width x pitch x links. Match all three to the marking on your existing tracks.
Tread Options
- Block: A block-pattern tread that favors stable ground contact and abrasion resistance across dirt, gravel, and mixed surfaces.
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.
CAT 303ECR Details
- Warranty: 24 months
- Shipping: free to the contiguous US, typically 1-3 business days
- Returns: 90 days
Undercarriage Parts for the CAT 303ECR
Tracks wear with the undercarriage. Inspect and replace worn parts together:
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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