SRAM RED E-TAP rear derailleur 11 Speed Medium Cage

The SRAM RED eTap 11C rear derailleur Medium Cage shifts when you want it to. By radio. Easy to adjust. Mechanical refinements such as a carbon cage, ceramic bearings in the shifting rollers and high-quality finishing are combined with first-rate electronic operation.

ETAP
Wireless shifting, battery energy management and mechatronics - RED eTAP technology has one objective: to facilitate the most intuitive and coherent shifting possible. This shift logic is called eTap. The right-hand lever is used to shift up, the left-hand lever to shift down. Actuating both levers at the same time allows you to control the gears. Chainrings. Simple, fluid and intuitive.

WiFLi
SRAM's WiFLi technology serves a wider range of ratios than a short-cage mechanical sequencer. Compared to the three Chainrings, it ensures faster gear changes and considerable weight savings.

Orbit
Orbit technology is an innovative new form of rear derailleur motion control. It uses silicone fluid as part of an elegant, ultra-light shock absorber system. Compared with a conventional friction clutch system, Orbit technology produces no additional resistance on the rear derailleur spring during slow or light movements. This makes it easier to shift gears and remove the rear wheel. During the ride, the fluid damper retains the chain in a refined, elegant manner. With maximum reliability and chain tension, for both two-factor and single-factor systems. 

Ref: 7967900139686