Mini Excavator

CAT 306CR Mini Ex Tracks

Fits track size: 400x72.5Wx67

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

24-Month Warranty Free Freight Same-Day Shipping Fleet Discounts
CAT 306CR rubber tracks and parts
Machine Performance
  • Operating Weight13360 lbs
  • Horsepower55.0 HP
  • ROC / Bucket Force14200 lbs
  • Track Size400x72.5Wx67
Hydraulics & Lift
  • Standard Flow30.0 GPM
  • High Flow33.0 GPM
  • Hydraulic Pressure3844 PSI
  • Lift TypeConventional Tail
OEM Reference Parts
  • Sprocket P/NSP158-4795
  • Front Idler P/NFI241-5973
  • Bottom Roller P/NTR340-8957

CAT 306CR Mini Ex Tracks

Pick your track size (OEM fit: 400x72.5Wx67), then choose a tread pattern. OEM-grade continuous steel cord · free freight.

CAT 306CR Mini Ex · 400x72.5Wx76

Staggered Block

Heavy-Duty Rubber Track

Staggered Block

Track Size: 400x72.5Wx76

$1,549.00$2,007.00Save $458.00

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CAT 306CR Mini Ex Undercarriage

OEM-cross-referenced sprockets, idlers & rollers for the CAT 306CR. Drop-in fit for 400x72.5Wx67.

CAT 306CR Mini Ex Sprockets

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

Heavy-Duty Sprocket

Heavy-Duty Sprocket

Part #: SP158-4795

$229.00$259.00

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CAT 306CR 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 #: FI241-5973

$499.00$559.00

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CAT 306CR Mini Ex Rollers

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

Heavy-Duty Track Roller

Heavy-Duty Track Roller

Part #: CR277-8576

$179.00$209.00

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Heavy-Duty Track Roller

Heavy-Duty Track Roller

Part #: TR340-8957

$149.00$169.00

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CAT 306CR Mini Ex Attachments

Excavator Pin-On mount for the CAT 306CR. 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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CAT 306CR FAQs

Common questions about CAT 306CR tracks, undercarriage parts, and attachments.

What size rubber tracks fit the CAT 306CR?
The CAT 306CR commonly uses track size 400x72.5Wx67. Verify against your machine's existing track sidewall marking or OEM manual before ordering.
Are Heavy Iron tracks guaranteed to fit my CAT 306CR?
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 CAT 306CR 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 CAT 306CR?
We stock 1+ tread option for the CAT 306CR — 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 CAT 306CR?
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 CAT 306CR?

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

Request a Free Quote
Or call us at: (850) 816-7898