Bicycles and bicycle parts and components therefor, namely, frames, hubs, wheels, skewers to tighten the wheel onto the frame and remove the wheel from the frame, forks, handle bar stems, seat posts, handle bars, saddles, bar ends, spokes, pedals, cassettes that control speed, cranks, headsets which provide a rotatable interface between the bicycle fork and the bicycle frame, brakes, handlebar grips, rims, chains, shifters in the nature of a speed control for people to change from a higher to a lower speed, disc rotors, bolts, seat clamps, bottom brackets, front derailleurs, rear derailleurs, rear shocks, brake shoes, tires, and chain guides