The sram red 11 speed rear derailleur it takes a degree of passion for the sport that canrsquot be faked to fully appreciate sram red it was created to blur the boundaries between machine and athlete the sram red rear derailleur was designed with our exact actuationtrade technology for precise efficient shifting carbon fiber titanium and ceramic bearings complete the spec the result adds to its legacy as the heart of the purest groupset for the pursuit of cycling excellence sra