SRAM NX 11 Speed Trigger Shifter & Long Cage Rear Derailleur, BlackSRAM NX 1x11 Long Cage Rear Derailleur NX is SRAM's 1x drive train for the masses. All the key functionality features of high end 1x derailleurs are built in. Cannot be used with double or triple chainrings X Horizon geometry Same roller clutch and CageLock features as high end models Item Specifications Color Black Weight 322 Largest Cog 42 Chain Wrap Capacity 25 Cage Length Long Drivetrain Speeds 11 Rear Der Shifter Compatibility SRAM X Actuation