Rival Short Cage 11speed RD

Your needs aren't less demanding, they're different. The SRAM Rival 1 rear derailleur is engineered for smooth, reliable shifting action, delivering 100% of what you demand. By eliminating unwanted chain movement, X-HORIZON shifts faster, reducing shift effort and chain slap.
FEATURES
A dedicated SRAM 1x11 rear derailleur
Exact Actuation for fast and 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 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