The present invention discloses a reinforced bicycle or vehicle frame comprising: a head tube portion for engaging a front fork and wheel; a bottom bracket portion for engaging a rear fork and wheel; a seat tube portion. Each of the head tube portion, the bottom bracket portion, and the seat tube portion being hollow, allowing for the installation of a frame reinforcement assembly to a hollow interior of each of the hollow head tube portion, the bottom bracket portion, and the seat tube portion or entire frame. The frame reinforcement assembly includes a plurality of ribs structure adapted to be approximately be perpendicular to each other. The plurality of ribs structure formed in the hollow interior and being composite material to provide stiffness to the hollow interior of each of the hollow head tube, the bottom bracket, and the seat tube portions.