This is a carbon fiber-reinforced plastic main chassis for the distinctive M-07. Compared to the standard fiberglass reinforced chassis, it will flex significantly less under load. This set up is ideal when racing your car on high-grip surfaces.  - M-07 Concept Lower Deck x1  - Carbon-fiber reinforced part optimizes chassis flex for improved performance on high-grip surfaces, without compromising pitch rigidity.  - Compatible with M-07 Concept chassis.