SRAM Automatic 2-speed Hub Coaster Brake, 36-Hole, 120mm Over-Locknut, 19T Cog | Tree Fort Bikes
For Sram Automatix Bicycle Transmission Hubs Automatic Internal Two Speed V Brake For Refitting - Diagnostic Tools - AliExpress
SRAM Kicks Back with 3 Speeds for WBR, and a Hub that can Shuck Corn - Bikerumor
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