HPI MT-Truck for 65 mph challenge-- mostly stock except for speed items :.21 motor- new 2 shoe 2 speed , costume clutch bell whit -20-25 gears mounted , Ofna rim adapters allow use of Ofna belted tiers and Tower brace to eliminate chassi flex , result: using stock body approaching mid 50 mph front becomes very , very light --picture does not show cranked down suspension and changed rear springs