Limited release conversion for the MICRO RS4- the car that started the whole micro craze! This is the next step in the evolving EXO chassis- released thanks to HPI starting up the HPI Challenge races again in 2008. Cleaner and lighter layout for a more efficient performing chassis. Now designed for use with Lipo cells and Mamba/Tekin brushless motor systems and available in 140mm or 150mm wheel base. The EXO3 also has the most advanced and smoothest rear suspension to date on the MRS4 thanks to the VCS oil shock and 5 link swiveling rear pod.