If players want to go fast in Mario Kart 8, then its best to look for the fastest setupts in one of the best Kart racers. Mario Kart 8 has a variety of options to choose from. Whether its in the Weight class of the character, the kart body, wheels, and glider, all of these things come together to make the best kart in Mario Kart 8 and ensure that Speed will be on the side of the player so they can claim that gold trophy.