Abstract: Novel side rails for self-stabilizing, one-wheeled electric skateboards and related products are disclosed. The angled frame rails of this invention and disclosure lower the center of gravity at the contact points—i.e. a rider's feet on the footpads—by as much as possible without losing any clearance at the front and rear bumpers, and tilt the gyroscope to change the zero-degree level default position. In order to achieve this, the inventive rails herein change to a downward tilt as soon as possible after the axle bolt connection points, then tilt back up before the footpad decks and continue through the front and rear of the vehicle. In one embodiment, a five-degree downward tilt of the rails allows for an approximately one-half inch drop in the center of gravity of the vehicle, thus increasing speed, stability, and safety.