S7 (Super 7)

Brand: SRAM

Seven-speed internal gear hub, first known as the Sachs Super 7 and then as the SRAM S7 after SRAM acquired Sachs in 1997. A descendant of the Fichtel & Sachs Torpedo hubs, it uses a single-stage planetary gear train controlled by concentric pusher pinions and a clickbox. Gear range of about 303% (the early Super 7 versions ~284%), intended for urban use and touring. Available with coaster brake, drum brake or as a freewheel version (rim brakes). Produced from the 1990s until around 2010. Approximate years.