I have been running my Rally with a Traxxas 3500 and a ** *** esc, 17mm treaded buggy tires, 19t/54 spur and a *** 5000 3s battery. I'm very impressed with speed. I want to upgrade motor and esc, but cannot decide which to go to, the ** 2400kv/*** esc or the ** 2650kv/*** esc. If anybody that uses their Rally for ONLY pavement racing/bashing/speed runs and has any suggestions, please let me know. I only have 3s and will NOT use a 2s battery. Thanks.