schindelhauer bikes - Automatic gearing - how does it work? The SRAM Automatix 2-speed hub automatically shifts up a gear when you reach speed of around 16 km/h. When you slow down
SRAM Automatix | Sartori Bikes - Hubs wheel
SRAM Automatix 2 Speed Hack
SRAM Automatic 2-speed Hub Coaster Brake, 36-Hole, 120mm Over-Locknut, 19T Cog | Tree Fort Bikes
The SRAM Automatix 2-speed Bicycle Hub
For Sram Automatix Automatic Transmission Hub Inner Two-speed Bicycle V Brake Hub For Bicycle Modification - Wheels - AliExpress