Exchanging the Bearings in your Rear Wheels
Replace the 1150 Plastic Bearings on the rear uprights with 1150 Sealed Ball Bearing. It is not necessary to apply grease to the shaft when applying Ball Bearings. Please wipe off grease already applied to the shaft. Don't forget to exchange the Ball Bearings on the inside of the uprights. For more details, please refer to Step 4 and Step 16 of the instruction manual.