SRAM X1 Rear Derailleur - 11 Speed Medium Cage Black

SRAM X1 Rear Derailleur - 11 Speed Medium Cage Black. The X1 group has all the important features of the high-priced spread with a modest increase in weight.

Wide-tooth narrow-tooth pulley wheel maximizes chain control by fitting inner and outer chain links perfectly

X-Horizon design maintains constant chain gap across all gears and eliminates ghost shifting

Roller bearing clutch eliminates derailleur bounce and chain slap

Cage Lock feature simplifies wheel removal and chain installation

Must be used with SRAM 1x11 shifter and cassette

Cannot be used with double or triple chainrings