Specialized Aethos 2 Lightweight Derailleur Hanger Description: The Specialized Aethos 2 Lightweight Derailleur Hanger is designed to simplify the process of tracking down a hanger for your Specialized Aethos 2 bicycle or frame. The SRAM UDH (Universal Derailleur Hanger) interface aims to be the standard across different brands for compatibility and simplicity. This lightweight version of the UDH derailleur hanger saves weight over standard versions and is machined with an optimized aesthetic to match road bikes featuring UDH compatibility. Features: Genuine Specialized replacement parts Replacement for frames already installed with a lightweight derailleur hanger Compatible with thru-axles that have a 1.0mm thread pitch Specifications: Color: Black Material: Alloy