This is the replacement aftermarket bottom (center) roller for the Kubota KX 121-3, KX 121-3SS, KX 121-3ST, and Kubota KX 040-4 mini excavators. Take advantage of huge savings versus purchasing through your original Kubota equipment dealer.
This bottom roller is also known as RD148-21700.
The bottom rollers support and guide the machine on the track and carry the weight of the machine while it is traveling or digging.
We now stock the steel track version of these rollers so please indicate if you are running steel tracks on your mini excavator.
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