Brad the 3400 was just for the cars that used the Kits complete electronics package and the Kit motor. 2400 still for everyone else. I thought about the guys that may find buying the car and switching over to brushless a little salty and decided that a little hotter Lipo would still keep them in the playing field until they decided to go brushless 13.5. I just want everyone to be competitive and have fun at a low cost. I really believe that the cost has ran many out of our hobby. I love brushless but I know of some that just could not see refitting cars that were top notch when we all ran brushed and they quit the hobby. I also love the Lipos but again some had the best Nimh batts and did well but couldnt see spending for new chargers and new batteries for the lipos and they left the hobby. Chargers have come down that can charge Lipos and Orion has some really good Lipos at an affordable price and I applaud them. I feel that you should be able to go racing,have fun and be competitive for less than $400 and this Slider class and my proposed Slash 2400 class will easily do that and that is including the car/truck, battery and charger.