VOLspeed V4 for Bosch eBike Tuning Kit (model years 2014-2022)

Pretty Easy to fit to my rail 7. I have used it for a week or so now and it works great, the default of boosting the level of assistance came as a bit of a surprise, but i have programmed dynamic mode to have the stock assistance levels.

This chip worked great installed with no problem. Bike now can go up to 28 mph. I am happy, used different chip in the past and my motor was acting up cutting in and out losing power just not being consistent this product keeps the motor spinning like it was designed.

what an absolutely fantastic service , I ordered the wrong item , hassle free returns that was all sorted for me with a full refund ,then great assistance in ordering the correct item which took minutes to fit . Brilliant .