The SRAM 2011 X0 Rear Derailleur 10 Speed Cage Assembly Long Silver is a premium component designed to optimize shifting performance for mountain bikers and enthusiasts. Crafted with precision engineering and high-quality materials, this derailleur cage assembly ensures smooth and precise gear changes, even under the most demanding conditions. Its long cage design accommodates a wide range of cassette sizes, allowing riders to tackle steep climbs and fast descents with ease.