My liitle girl told me she wanting a slash. so I found a decent priced roller and took my main rusty apart to get it running. Now we will just share till I put mine back together. One question tho is there a batt hold down ext for these? My 3S won't fit its a 5000mah SPC soft pack. After driving it some today I'm really impressed on how much better it handles than the rusty. She seems to really like it but has some learning to do.