With our Kit #1 we use a separated excited motor that can acheive speeds of up to 60-80 km/h at 72 Volts DC in ideal conditions.. 45 to 50 km/h would be your normal top average driving speeds with this kit. The motor is manufactured byourselves and is rated at 40 HP peak. It measures242mm dia. x269mm long and weighs 62 kg. The cost for this complete kit is $1518 + shipping.