The FM-A chassis is a front motor unit with advanced aerodynamic themes that - thanks to its center of gravity toward the front - is at home on a whole variety of track types including those with frequent elevation changes. It comes equipped with a low-friction front skid bar and four rollers including highly stable 8mm thickness rear rollers. The chassis underside allows easy access to the motor and quick setup changes. Aircraft-inspired aero side stays allow attachment of a range of Grade-Up parts. The chassis is molded in durable ABS, with low friction A parts such as underpanel, all in matching black. The model includes 3.5:1 gears.