This is the complete 300x52.5Kx86 sizing & fitment guide. The 12" (300mm) belt runs on a range of mini excavators — here's how to confirm it fits and which tread to run.
Track specifications
- Size: 300x52.5Kx86
- Width: 300 mm (12")
- Pitch: 52.5 mm
- Links: 86
- Guide type: K
- Construction: Continuous steel cords, drop-forged guide lugs, 100% virgin rubber
- Warranty: 24 months
Compatible machines
Verified fit for these mini excavators. Confirm your size before ordering — fitment varies by year and undercarriage.
Case: Case CX33C, Case CX37C
Hitachi: Hitachi Ex40Ur 3, Hitachi Ue35, Hitachi ZX30U-5, Hitachi ZX35U-5, Hitachi Zx30U 2, Hitachi Zx33U, Hitachi Zx35U, Hitachi Zx35U 2, Hitachi Zx35U 3
Hyundai: Hyundai R35Z-9
John: John Deere 35D, John Deere 35ZTS
Komatsu: Komatsu PC30MR-3, Komatsu PC35MR-3, Komatsu PC35MR-5, Komatsu Pc30Mr 2, Komatsu Pc30Mrx, Komatsu Pc35Mr 2
New: New Holland E33C, New Holland E37C
Choosing the right tread
Multi-Lug / Zig-Zag — best traction in mud, snow, and mixed terrain; great for landscaping and utility work.
C-Block / Block — thicker lugs resist cuts and abrasion; built for demolition, hardscape, and rock.
Common applications
- Utility, trenching & grading: Precision passes where stability and a smooth rolling path protect the undercarriage.
- Landscaping & turf: Lower-disturbance work on finished ground — pair with a multi-bar or turf tread.
- Forestry & land clearing: High-impact terrain demanding continuous steel cords and drop-forged links.
- Mud & snow: Loose, wet, or frozen ground where an aggressive multi-lug tread clears and grips.
Ready to order?
Shop all 300x52.5Kx86 tracks & tread options → · Free shipping · 24-month warranty · Call (850) 816-7898 for fitment help. Heavy Duty Comes Standard.