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Amazon slammed for selling products that 'chip' or 'tune' e-bike motors to allow higher speeds | electric bike reviews, buying advice and news - ebiketips
Amazon.com : SPEEDBOX 3.0 Bosch – ebike Tuning Kit for Bosch Motor 2017-2020 Gen4 : Sports & Outdoors
Bosch eBike Kit di revisione – tutti i cuscinetti adatti per Bosch GEN2 Active Line/Performance Line(CX+Speed) : Amazon.it: Sport e tempo libero
Amazon.com: Bosch Ebike
Amazon.com: Volspeed V4 Tuning kit Compatible with All Bosch Motors Gen2 / Gen3 / Gen4 : Automotive
Amazon accused of selling kits to hot-rod e-bikes for more speed