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