SRAM`s Exact Actuation results in the easiest index shifting system to set up and keep up. The X5 rear derailleur offers precise and dependable 10-speed performance at a cost that won`t break the bank. ? ¢ 10-speed compatibility? ¢ 36-tooth cassette compatibility? ¢ Direct Route Technology for lighter effort shifting? ¢ Compatibility: Medium Cage - 2x10 / Long Cage - 3x10? ¢ 1:1 Exact Actuation ratioBrand: SRAM