Kubota KX121-3 Lower Track Roller

Aftermarket OEM Replacement – Part #RD118-21700

This is the replacement aftermarket bottom (center) roller for the Kubota KX121-3 mini excavators. Replace all of your worn track rollers at the same time to minimize wear on the undercarriage and maximize the lifespan of the rollers.

This bottom roller is also known as RD148-21700. These rollers are simple to change, and you can install the new rollers without removing the rubber track from the machine. There are only two bolts that attach each roller to the track frame. Do not over-tighten with an impact.

Bolt size M16*1.5*40

Lock washer & Flat washer 16mm

The bottom rollers support and guide the machine on the track and carry the weight of the machine while it is traveling or digging.

This dual-flange outside guide-type bottom rollers are made to original specifications and produced with high-quality double lip seals to lock dirt and debris out and lock the lubrication in for long-lasting service for your machine. These rollers are direct-fit replacement rollers designed for use on the original Kubota rubber track guide system. Guaranteed fit.