Replace or upgrade your current rear derailleur hanger with the DO-A87 derailleur hanger from XLC. It is a part of the wide collection of hangers made by XLC, with each one designed to fit a specific bike frame. Hangers are designed to take the brunt of the force and bend or break to save your frame from damage in a crash or if your derailleur is damaged. The DO-A87 comes with two holes for attachment to the frame and the rear derailleur and is a unique shape. It is best to check that your current hanger matches the DO-A87 before purchasing. The hanger is constructed from aluminium which is known for its strength and lightweight, and the DO-A87 is compatible with mountain, road, city, trekking, and race bikes.