When it comes time to replace your tired sh.28, You might want to consider the radical 621t. That motor is awesome. I just installed it on my matrix. VERY happy. I will post a vid hopefully on new years day when we have our big bash. Oh if there are any cen owners, or any drivers for that matter that want to come to my track on New Years day just drop me an email. Looks like its going to be a big turn out. We will be flying in the field, and racing on the track.
Dennis

I run the Radical motors in both of my CEN cars and I couln't be more happy!!!! These motor are truely top-notch fast fast fast and run at surprisingly low temps!!!!!! Have fun you choose a winner!!!
Erik Johnson