It’s the same size Kubota fitted to the KX121-3, under OEM ref RD118-22310, with the “K/KC” guide profile. One thing to get right before you order: the KX040-4 is the 2013-on machine at around four tonnes.
The 1990s KX040 and KX040-2 carry the same model number but are unrelated machines on a completely different track. Two minutes checking now saves a wrong delivery — read the size moulded on the inside of your current track before you buy.
FAQs
What size rubber tracks does the Kubota KX040-4 take?
350×54.5×86 — 350mm wide, 54.5mm pitch, 86 links — from £693 + VAT. Kubota’s reference for it is RD118-22310.
Do Kubota KX121-3 tracks fit the KX040-4?
Yes — both machines run the same 350×54.5×86 track with the “K/KC” guide, so one track covers either.
Will these tracks fit my 1990s Kubota KX040?
No. The original KX040 and KX040-2 take a 400×72.5×74 — a different track despite the shared model number. Order from the moulded size on your machine, not the badge.
Do you deliver to my part of the UK or Ireland?
Yes — we supply across the UK and Ireland, and your quote shows the delivered price to your site or yard before you commit. Nothing gets added after the fact.