So i got a rustler xl5 rock an roll converted to brushless of course 4s and 2s didnt stop wheeliing 4s was crazy could even get past half throttle but you had to steep it .. ordered this as ive had many rustlers wiv these on only 3s hahah vxl and this is so much better than a 3s the extra 3.7 or 4.2 fully charged cell does give it that extra punch just need new tyres 😂 best upgrade for the rustler and slashes & bandits verry durable looks good matches rpm green parts and does ehat it needs to do