Amazon says it will stop selling electric bikes to California customers if the bikes exceed the speed limits allowed under state law. The move comes amid growing concerns over safety, enforcement, and the rising popularity of high-powered e-bikes that can travel faster than legal limits.

California law divides e-bikes into three classes, with the fastest legal models capped at 28 mph when using pedal assist. Some bikes sold online have reportedly exceeded those limits, raising concerns from lawmakers and safety advocates about riders using them on public streets and bike paths.

The company says it is working to identify and remove listings that do not comply with California regulations. The decision could impact third-party sellers who market high-speed electric bikes through Amazon’s platform.

The crackdown follows increased scrutiny of e-bike safety across the state as cities deal with more accidents, complaints, and questions about enforcement.