E-bike tuning chip compatible with EP8 motors, EP8 RS motors, Giant Revolt (up to 35 km/h), and Shimano EP801. Not compatible with Shimano EP801 and the SpeedBox App. If you want the tuning always active independently of the light function, connect the fork of the SpeedBox device to the terminal marked “-”. The SpeedBox 1.3 is a chip that unlocks Shimano EP8 / EP8 RS e-bikes – esstially removing the 25 km/h speed limit. This allows for much faster riding with... SpeedBox 1.3 compatible with Shimano EP8 - e-bike tuning module compatible with Shimano EP8. SpeedBox. If the bike is not equipped with lights, the SpeedBox remains always active. SpeedBox 1.3 for Shimano (EP8) :: SpeedBox Tuning Specialized Sport Speedbox 1.3 For Shimano EP8 – Melbourne Powered Electric Bikes Bosch E Bike Removing the tuning chip is as simple as installation. Buy Procion Cold Water Dye, Assortment (Set of 8) at S&S Worldwide This chip is easy to operate with the LIGHT button.