SRAM DERAILLEURS - REAR


2011 SRAM Red Black Rear Derailleur

Color:  Black

quantity

The SRAM Red Black Rear Derailleur shares all the functionality of the standard Red rear derailleur. The difference is limited to color alone. It's still based on the same groundbreaking design we first saw on the Force rear derailleur with its stout 2-spring system and Exact Actuation technology where the derailleur pulls the same exact length of cable no matter what gear you're in. It's a simple derailleur to set up, it stays in adjustment longer, and it provides laser accurate shifting.

There was little to improve in terms of the function of the Force rear derailleur, so with Red, SRAM's goal was to improve performance in other ways. What you get with Red is weight loss and drag reduction. They saved 20g -- nearly a full ounce -- by changing the inner link from magnesium to carbon fiber; by going from a carbon/aluminum cage to a full carbon version; and by upgrading the parallelogram spring to titanium.

From a drag reduction perspective, the Red derailleur pulleys are upgraded to SRAM's Black Box ceramic cartridge bearings. Ceramic bearings offer outrageous hardness and roundness in comparison to steel, which substantially reduces the mechanical drag of the pulleys as a whole. After aerodynamic drag, mechanical drag is the leading culprit in consuming the power you put into the pedals. It's why people are willing to pay nearly $200 for ceramic derailleur pulley upgrades for their Record and Dura-Ace rear derailleurs. Here, the upgrades come stock, and they're factory-installed.

The Red Black Rear Derailleur is nearly 30g lighter than Force. It can accommodate cassette gearing as low as a 28t cog, and it has ample chain wrap capacity to handle any SRAM crankset/cassette combo -- regardless of whether you ride a standard or a compact crankset. Thanks to its use of Exact Actuation technology, it's compatible with all SRAM shift levers: Red, Force, and Rival.