SRAM’s new RED 22 Rear derailleur continues the trend of upgrades found in the rest of the group set. Carrying over all of their previous developments, the RED 22 rear derailleur gets the same 1:1 Exact actuation you expect, but designed for 11 speeds. The shifting is now even more accurate, it has to be because the space in between cogs is smaller.
Other improvements include a redesigned tooth profile on the pulley wheels to help reduce chain noise, and even a new elastomer coating to silence the chain as it moves through the rear cage. The standard rear derailleur is compatible up to 28t rear cassettes. A new spring-fixed barrel adjuster gives you even more precision in adjustability.