Stupid fast. So are the x maxx's. All of 40-50 on a 5th scale truck. Rustler has to run close to 60 if not more. I put a 1/8th scale engine in a t max before the kit was made. It'd flip over if you pined the throttle, literally would flip on its roof. Was so fast you couldn't here it shift into 2nd gear. I put 1/8th scale tires on it too. Bitch to keep running and to start but a full on riot when you got it half assed tuned. Had 2 t maxx, 2 rustlers, a stampede and a Revo that was first gen of bigger engine. Also had electric Rustler and stampede. Totally got any from the nitro, only electric now. All waterproof from new.