Originally Posted by Bob Moore

No the spec class is box stock no changing anything. What comes in the box is what you run. The only thing you can change is the radio and you can run either 2 cell lipo or a 6 cell pack.

ROAR rules are breifly:
17.5 motor or any motor that comes with the kits.
Any servo
Any ESC
Any shocks and spring
Ball diff or Gear diff
CVD's are allowed
6 cell pack or 2 cell lipo
Any SCT tire (ex. Goosebumps, Bowties, and so on.)

All the trucks must run SCT tires no 1/8th scale tires and must run a truck body.

The spec class is for the racer who does not want to worry about upgrading things and a great way for the beginners to get into racing
The ROAR SCT is more for the racer who wants to be able to change things around run different tires, ESC, Motor, Servo
I would think this would be more geared to the pro or more advanced drivers.