Wish your Yamaha e-bike had a little more… freedom? The SPEEDBOX 3.1 chip is a tuning module that removes the 25 km/h (15.5 mph) speed limiter on bikes with Yamaha PW-X3 or PW-S2 motors. Once installed, you can ride as fast as your pedaling (and motor power) allows. It shows your real speed on the display and even lets you set a custom max speed if you want. Activation is simple: press a button combo on your bike's display. The connectors are color-coded and keyed, so installation is pretty straightforward (follow the guide or video). Lets you access the full potential of your motor for off-road or private land use. (Important: Using this on public roads may be illegal in your area. It's for private property use only. Not compatible with other Yamaha motors or Giant bikes. Ride responsibly.)
