11T 13T Bicycle Pulley Rear Derailleur Multicolour MTB Road Bike Wheel Guide Bea

Adjust the derailleur: Once you have installed the new jockey wheel, it may be necessary to adjust the derailleur to ensure smooth shifting. Apply for most of rear derailleur on the market. Remove the old jockey wheel: Locate the rear derailleur and remove the old jockey wheel by loosening the bolt that holds it in place.