I had a 5700kv with the sidewinder with a 2s and if I was able to keep the front on the ground I was happy. Popping wheelies was cool at the start, but not being able to drive it is annoying after awhile. I am almost done rebuilding my T4. I am debating putting in my Tekin RS with a 17.5 or the Castle 4600kv. The 4600kv is stupid fast, but easier to keep the front end down.