SRAM Apex1 11-Speed Long Cage Rear Derailleur

SRAMs Apex 1 drivetrain provides the gear range and the shifting simplicity to let you simply go where you want. The Apex 1 rear derailleur makes that gearing choice a reality with clean, crisp shifts, thanks to SRAMs X-HORIZON geometry and our ROLLER BEARING CLUTCH. Just go: Apex 1 will get you there.
Features:

Long cage: 11-42 cassette.
With CAGE LOCK technology, wheel removal and installation are easier than ever
Compatible with 10-speed and 11-speed SRAM 1x road systems
Equipped with Roller Bearing Clutch
X-HORIZON design reduces shift force, eliminates ghost shifting and chain slap
Large upper pulley offset automatically adjusts chain gap
Steel cage

Specification:

Speed (RD): 11s
Cable pull ratio: Exact actuation
Cage (RD): Long
Max tooth: 42
Color (RD): Black
Pulley bearings material: Steel
Cage material (RD): Aluminum