There are better ones, if you plan on running larger tires look into something with 200+ oz of torque for steering and try to keep the speed around .15 or quicker. You won't need as much torque for the throttle but the more torque the better the braking will be, I would be more concerned about speed for the throttle. If you are going to 2.4ghz, you will need a new rx and trx, you can get the Traxxas ones pretty cheap on ebay. If you are on a budget you can get the Traxxas servos from a chop shop, I thing the waterproof one with 125 oz of tq was about $25. The 200oz is a little overkill for a Sport but I like overkill, I'm running 140oz on my Rustler with Trenchers and it's doing ok.