https://www.bicycleretailer.com/product-tech/2022/06/02/spotted-sram-prototype-e-bike-motor#
MitchJi 10 MW Joined Jun 2, 2008 Messages 3,246 Location Marin County California Jun 3, 2022 #1 https://www.bicycleretailer.com/product-tech/2022/06/02/spotted-sram-prototype-e-bike-motor#