They are just really old cars. Parts are starting to get hard to find for em. I did find a bunch of stuff off stormerhobbies.com for mine. They seemed to have the best prices. Not sure if they are discontinued or just limited supply. I do know that it's impossible to get parts for them at my LHS only because the two shops I goto, one only carries sprint2 parts and the other doesnt carry hpi at all. I blame traxxas.