SRAM X01 Eagle Rear Derailleur 12 Speed 52T Max, Long Cage, Lunar

The rear derailleur's "straight parallelogram" design limits all movement to the horizontal axis, which makes ghost shifting impossible while also reducing shift force. For quicker, more exact shifting, the large upper pulley design maintains a constant chain gap across all gears.

SRAM X-Sync 1x chainrings provide the highest level of performance and durability. The SRAM X-Sync tall square teeth edges engage the chain earlier than traditional triangle shaped teeth. The sharp and narrow tooth profile, as well as rounder chamfer edges, help manage a deflected chain. To provide the best possible performance in muddy conditions, the X-Sync chainrings have been designed with mud clearing recesses for the inner chain links and rollers. Engineered in Germany, X-Sync chainrings are an integral part of the SRAM 1x drivetrain. Accept no imitation.

Developed specifically for SRAM 1x, X-Actuation keeps shifting sharp and consistent across the entire cassette.

Eagle technology represents our newest 1x drivetrain technology. Eagle is a lighter, simpler, more durable, and easier to use drivetrain. Eagle features all-new 1x components, engineered for even greater durability and performance while maintaining a significant weight advantage over other drivetrain solutions. Eagle technology also provides an expanded gear range of 520%, which is equal to 2x11 drivetrains.

Roller Bearing Clutch
Roller Bearing Clutch technology eliminates derailleur bounce and chain slap without sacrificing precisoin.

Cage Lock
With Cage Lock technology in the rear derailleur, wheel removal and installation - as well as chain installation - becomes faster and simpler. Just push the cage forward to create slack and lock it into place.