Originally Posted by ScottKelly911

I'm currently running a 43T Spur and a 15T Pinion on a 2650 with 4s and it's pretty much overkill on most tracks, so if you went with a 15 or 16T pinion you should be fine. It really depends on what you're looking to do though. if you're looking to extend run time to make a 20 min main, I'd suggest going down to about an 11 or 12T pinion as well as increasing the spur size to get the most run time possible. If you're practicing on a track or have 5-10 min mains (you should get about 15+ min of run time if you're driving hard), then try out around a 15 or 16T pinion. If you're just bashing and enjoy doing some high speed runs, then try out an 18 or 19T. With the 2200 you wont have to worry about heat issues, so go out and enjoy! I hope that helps.