Speedbox 3.2 for Yamaha PW-SE, PW-X, PW-TE, PW-ST, PW-X2 eBike Tuning Kit

Fantastic easy to fit with clear instructions fast delivery.

Has thrown a few bobbles buta reboot sorts it out.

96 % of my riding is off road coastal paths, but where I used to lag behind my mates on the rd I can now keep up , no more hitting a wall at 16mph , also love the ease of how you can switch it on and off so only use it when needed and At 63 it really helps the old legs