[jhautz]

No the Artena uses 13/38 difs. Thr RTR Buggy uses 9/28 and the FRE Buggy uses 13/38 also. CEN uses some wierd ratios and different all over the board.

I personally would upgrade the difs with the Hotbodies truggy difs. 10/43 and then change the center spur to a 46T. The stock 66T forces you to push the battery way off to the side just because of how big the spur diameter is. Use the Cen buggy center spur.

Also, a must do upgrade is the upper arm of the servo saver. the stock plastic ones break easilly. The CNC red is the solution. I have one sitting here new in the package if you are interested. I'll give you a deal on it LMK. I bought it for a CEN I had and then sold it before installing it. My other 2 cens were already upgraded so it sat in my parts bin for the last year.