-EXACT ACTUATION™ for fast & accurate shifts using SRAM’s 1:1 actuation ratio (shifter cable travel: derailleur movement) -X-SYNC™ pulley features a 12-tooth design that helps control the chain’s lateral movement -ROLLER BEARING CLUTCH™’s one-way roller clutch controls chain tension for consistent shifting -X-Horizon™ straight parallelogram design limits all movement to the horizontal axis, which makes ghost shifting impossible while also reducing shift force -Cage Lock™ technology makes for fast wheel changes or chain installation -A dedicated SRAM 1x™ rear derailleur