SRAM Corporation is a privately held bicycle component manufacturer based in Chicago, Illinois, USA, founded in 1987. SRAM is an acronym comprising the names of its founders, Scott, Ray, and Sam, (where Ray is the middle name of company head Stan Day).The company is known for producing cycling components, including some internally developed, such as Grip Shift, DoubleTap, dedicated 1x11 mountain and road drivetrains, and the only available wireless electronic groupset, SRAM Red eTap.