SRAM Apex 11 Speed Rear Derailleur is designed to make your ride smooth and efficient. With its advanced features, this derailleur ensures precise and reliable shifting, allowing you to focus on the journey ahead. The SRAM Apex 11 Speed Rear Derailleur is equipped with X-HORIZON geometry and a Roller Bearing Clutch, providing clean and crisp gear changes. Key Features Long cage design supports an 11-42 cassette. CAGE LOCK technology simplifies wheel removal and installation. Compatible with both 10-speed and 11-speed SRAM 1x road systems. Includes Roller Bearing Clutch for improved performance. Benefits X-HORIZON design reduces shift force and prevents ghost shifting and chain slap. Large upper pulley offset automatically adjusts the chain gap for smoother operation. Durable steel cage construction. Specifications Speed (RD) 11s Cable pull ratio Exact actuation Cage (RD) Long Max tooth 42 Colour (RD) Black Pulley bearings material Steel Cage material (RD) Aluminium