The SRAM Apex Eagle rear derailleur quietly and quickly shifts across their 12-speed Eagle cassettes while 1x-specific chain retention technology keeps the chain where it needs to be. It’s the best of SRAM's road and mountain bike innovations in one package.

Compatible with 50t and 52t Eagle cassettes

Works with SRAM 12-speed mechanical Apex and Eagle shifters

For use with Eagle 12-Speed chain

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

Cage Length	Long
Chain Wrap Capacity (teeth)	42
Color	Black
Drivetrain Speeds	12
Largest Cog	52
Rear Der/Shifter Compatibility	SRAM X-Actuation
Rear Derailleur Mount Type	10x1 Standard