If your e-bike has an operating licence, it will generally expire as well. Even the installation of a larger chain ring can result in the expiry of the manufacturer´s guarantee. Liability, warranty and guarantee claims may be limited or completely cancelled by the use or application of the tuning, as the installation or use of the e-bike tuning results in a modification or manipulation of your e-bike. We accept no liability whatsoever for any current or future damage to objects and/or persons caused by the improper installation/installation and/or use of tuning tools from our shop. You have to use the tuning products from our shop at your own risk. Electric bike tuning manipulates the speed of your pedelec / electric bike, and this is not allowed in the area of German Road Traffic Licensing Regulations (StVZO). We explicitly point out that in Germany electric bike tuning products may only be used in private, enclosed areas – for example, for sports and advertising purposes.