The BMW Control Buttons will mount on the stock e-throttle grip assembly – all stock controls stay, where they are. Please check graphics for details.
WARNING: it will not fit on older analog throttle assembly (e.g. part No. 61317708220 or 61317708228 and similarly styled throttle assemblies (much thinner than the e-throttle). If you have some like what is shown on the picture below, please do NOT buy this product: