I have just bought an RT and its beautiful, heaps of fun to ride and nicely put together, not cheap like some others. As for speed increase I am stock at the mo but am looking at the 150 upgrade kit. Which MZ sells at their website. Also I have a question. I use this as my daily trasmortation and in the rain it kicks up a lot of water from the back tire that roosters mud etc up my back. Does anyone know of an aftermarket mudguard kit for the back wheel? I have seen them on other bikes but can´t find one for the RT. One of the ones that conforms to the back wheel and just covers it to knock the spray down.