This KM / H Dial kit is to replace the originally fitted MPH Dials, fitting this will convert the Speedometer needle reading from MPH to KM / H. Max Speed 330 km / h - 200 MPH Fits to F80 - BMW M3 4 door sedan. F82 - BMW M4 Coupe. F83 - BMW M4 Cabrio. https://dialslab.com/3D-BMW-F8x-M3-M4-dials-From-MPH-to-km-h-conversion-p230094570