This high-quality rear derailleur from SRAM is a must-have for any serious cyclist. Designed with precision and durability in mind, the X9 model is perfect for 7-speed bikes and features a medium cage length. It's compatible with a range of other SRAM components, making it easy to create a custom setup that meets your exact needs. The set includes both the derailleur and a derailleur hanger, making installation a breeze. Whether you're racing, touring, or simply enjoying a leisurely ride, the SRAM X9 rear derailleur is sure to exceed your expectations.