This factory replacement rear derailleur hanger is designed for Specialized performance road bikes using the Road Thru-Axle 2.0 bolt-on system. The lightweight alloy construction maintains precise shifting alignment while preserving the bike&';s original ride characteristics. Features & Details Type: Road Thru-Axle 2.0 bolt-on hanger (lightweight version) Material: Alloy OEM replacement: Direct factory-fit part Function: Ensures accurate rear derailleur alignment and drivetrain performance