Originally Posted by JoshuaRC10

I was expecting the same thing, and I'm surprised that it's not included.

I haven't driven a kit with the reinforced chassis, but a track buddy of mine has it and says he loves the car on carpet, while I've never been able to get my Pro to be anything even close to quick on carpet. It feels great on asphalt, and with some lost weight might even be competitive in my club races, but carpet it a whole different beast that I just don't think the car is stiff enough to handle well without significant alternative stiffening.