my truck does well on 4WD kit in it and sometimes it get stuck and sometimes it does not and it does not have reverse gear in it and it does not needed it and now i need to tuned the carb settings on warmer settings and S-Maxx are great trucks to work with and then someday it will be a hammy down to my cousin or my little brother to have their first hobby grade rc vehicle and before it does became a hammy down and i will end up a getting a brand new engine with a new transmitter and a new receiver and a few new tires and rims and that will be it for the upgrades, that will be awhile from now.