the r/c car is not belt driven so dont worry about getting rocks into the gears
its shaft driven and it comes with a upgraded remote and i upgraded charge APIX which u can check at there site selling at 70 Us and it comes with 2 shells a M3 and Porsche shell and a battery of course. this r/c is fully functional and is ready to go. looking for 120 CND for it all PM with offers all pms will be replied