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
eBike Tuning SpeedBox 2.0 for Yamaha PW-X Available NOW! - Remove Speed Limit - YouTube