SpeedBox 2.0 for Bosch 2014 - 2018 Motors – Two Wheels Empire
eBike Tuning SpeedBox 2.0 for Yamaha PW-X Available NOW! - Remove Speed Limit - YouTube
Amazon.com : SPEEDBOX 2.0 Yamaha – ebike Tuning Kit for Yamaha Motor : Sports & Outdoors
Amazon.com : SPEEDBOX 2.0 for Yamaha eBike Tuning kit Suitable for All Yamaha PW-TE, PW-SE, PW-X, PWX2, PW-ST Motors. Smart Tuning chip of The Second Generation : Sports & Outdoors