• Long cage 42t capacity
• CAGELOCK technology for easy wheel removal and installation
• Compatible with 10-speed and 11-speed SRAM 1x road systems
• Equipped with ROLLER BEARING CLUTCH
• X-HORIZON design reduces shift force, eliminates ghost shifting and chain slap
• Large upper pulley offset automatically adjusts chain gap
• Steel cage
• SRAM Model ID: RD-APX-1-A1