MT85 Bottom Roller The bottom roller for Bobcat MT85 is interchangeable with that of the previous-generation MT55 and MT52 series. Details are as follows: I. Core Compatible Models This aftermarket replacement bottom roller is suitable for the following Bobcat mini track loaders: MT 50 MT 52 MT 55 MT 85 II. Product Configuration Details Fully Assembled Status: The roller assembly comes complete with all necessary components, including: Bushing (6732271) Seal lip (7325259) Washer (6732013) Pin (6730701) Grease fittings (facilitating regular maintenance as required by the maintenance manual) Accessory Note: The roller is exactly as shown in the picture and does not include the shaft. III. Standard Installation Quantity Each machine requires 4 rollers per side of the undercarriage, totaling 8 rollers per machine. IV. Special Component Notes for MT85 Model Differentiated Component: For the MT85 model, the last roller adjacent to the rear idler (closest to the operator) is a special type, corresponding to part number 7277166, which is not currently available. Quantity Specification: There is 1 such special roller per side, totaling 2 per machine. V. Related Accessories and Alternate Part Numbers Related Accessories: We also offer rubber tracks and idlers for the Bobcat MT 50 and MT 52 series. Part Numbers: 6730683, 7109409 VI. Fit Guarantee This triple-flange bottom roller (7109409) is guaranteed to fit the listed models precisely. Currently, there are no other known alternate versions applicable to the Bobcat MT series skid steer loaders.