Who are we?- We are those who never want to be stranded;- We are those who like to get our hands dirty by repairing or restoring our motorbikes, because doing so is clever, fulfilling, fun, exciting, and even sexy;- We are the ones who don't like to be dumped by anyone or anything, especially our bike, even if old;- We are the ones who want our motorbikes to be always as vigorous as the teenage desire to own one;- We are the ones who transform our own reality into myth;- We are souls on motorbikes, and if a man or a woman has a motorbike, for us they are indifferently called 'Centaurs';- We are Centaurs aware that the motorbike, like the horse, must always be controlled to be ridden and properly driven;- We are a "motorbike myth" like the centaur Chiron, skilled in taking care of everything with our hands; We Are KKBIKE INTERNATIONAL: we build indestructible spare parts that never 'leave anyone stranded'.THE KKBIKE PINION (SUPERPINION)It is a reinforced motorbike pinion that can be mounted on the drive shaft of the gearbox. The technical problem analysed concerns the secondary transmission of vehicles that use chain, crown sprockets, and pinion gears to transmit movement from the drive shaft to the wheel, via a secondary countershaft. A crown sprocket and pinion system is a chain or gear transmission system, where the pinion is the smallest gear and the crown sprocket is the largest gear.