The Tour de France showcases the world's most minuscule upgrades, where every gain, no matter how small, can make a difference. From tape over bolts to aerodynamic saddles, these 'marginal gains' are the result of meticulous innovation and engineering. The article highlights eleven such gains, each with its own unique story and impact. Tape over every bolt and void, aerodynamic bottom brackets, special jockey wheel bolts, strips of coloured tape, DIY aero derailleurs, superlight bottle cages, aftermarket thru-axles, lightweight disc rotor lockrings, old series Garmin, aftermarket derailleur hangers, and aerodynamic saddles are all discussed. Each gain is a testament to the endless pursuit of performance and the art of cycling, where every gram and every millimetre counts. The article concludes by emphasizing the importance of these marginal gains in the world of professional cycling, where the difference between victory and defeat can be measured in millimetres and grams.
