Buy Kubota KX 121-3 replacement drive sprockets online individually but inspect your entire undercarriage and consider replacing the rubber track and sprocket at the same time to maximize the lifespan of the undercarriage and minimize premature wearing.
This is the replacement aftermarket steel drive sprocket for the Kubota KX 121-3 mini excavator. This is a direct replacement drive sprocket reusing your factory bolts. We suggest changing your sprockets and rubber tracks together for more even wear and increased savings.
Here is the complete line of undercarriage parts for the Kubota KX 121-3 including the rubber track, drive sprocket, bottom rollers, top rollers, and tension idler.