Campagnolo
Shimano
RockShox
Zipp
Giant Bicycles
SunTour
ZF Sachs
Trek Bicycle Corporation
Specialized Bicycle Components
Cannondale
Scott Sports
Schwinn Bicycle Company
Canyon Bicycles
Time (bicycle company)
American bicycle part company
sram.com
SRAM LLC is a privately owned bicycle component manufacturer based in Chicago, Illinois, United States, founded in 1987. SRAM is an acronym comprising the names of its founders, Scott, Ray, sAM,. Wikipedia