Micro SHIFT ADVENT Rear Derailleur 9 Speed Massive Gear Range Without The Price Tag Micro SHIFT's Advent rear derailleur packs all of the necessary gravel and mountain bike features into a wallet friendly package. Designed around the Advent cassettes, the Advent derailleurs are compatible with 11-42t and 11-46t cassettes making the Advent drivetrain a great option for anyone who wants a wide range 1x gravel or mountain bike drivetrain. The modular derailleur design makes the Advent derailleur fully repairable and allows for easier adjustment. The built in clutch mechanism keeps the chain tensioned properly and reduces unwanted chain slap. Compatibility with Micro SHIFT drop bar, bar end, thumb, and trigger shifters increases the Advent drivetrain versatility. Simply put, just like the rest of Micro SHIFT's Advent lineup, the Advent rear derailleur is bombproof, dead simple, easily repairable, and incredibly versatile. Features Built-in clutch mechanism keeps the chain properly tensioned and reduces chain slap Modular design allows for easy adjustments and is easily repairable Compatible with Advent 9-speed cassettes Compatible with the wide range of Advent 9-speed shifters Perfect for both gravel and mountain bike applications Specifications Max Cog Size11-46Clutch Yes Drivetrain Speed9-speed | Microshift | Advent Rear Derailleur 9 Speed | Black | Long Cage, With Clutch