Sram rear derailleur RED WiFLi - Exact Actuation™shifting enables fast and precise shifting - compatible with 11-32 cassette: larger ratio for every climb - new silent shifting with optimised AeroGlide pulley and ceramic bearings - new spring-mounted adjusting screw - Technology: Exact Actuation™ AeroGlide pulleys - Gears: 10 - Weight: approx. 167g - Material: Carbon cage, inner parallelogram arm made of carbon, aerodynamically shaped small parts made of titanium - Compatibility: Max. 32 teeth.