Last night I ran the 4XS on a high grip outdoor, astroturf track for the first time in a couple months. From the very first lap it felt incredibly fast and nimble, without having the negative characteristics associated with too much traction. It didn't have a tendency to traction roll at all, which meant I could push it harder and harder and the car would just take it. The reward was faster lap times every time, and managed to set the track record.
With the new CNC machines diff crown and pinion gears, the drivetrain is now very quiet and bulletproof no matter what track you run on.
With the appropriate setups, this car has been very fast and consistent on a low grip, outdoor bumpy clay track, and now on a high grip, smooth astroturf track. This proves that the car can be setup to be very fast, yet easy to drive in any track conditions. This car is an absolute masterpiece.