We carry a full line of replacement undercarriage parts for the Bobcat® 325 Mini Excavators. We stock all of your undercarriage and rubber track needs including sprockets, bottom rollers, and idlers. They are backed by an industry leading warranty against manufacturing defects. The Bobcat® parts listed online are in stock and usually ship the same day. Bobcat® frequently changes part numbers so if you have a problem locating the part you need please give us a call. There are several serial number breaks for this model so please verify before ordering. Often times your Bobcat® undercarriage parts can vary if you originally had steel tracks on your mini excavator so plesae specify when ordering if you have steel tracks on your mini excavator. Most orders now qualify for free shipping when you shop an order online.