The Scooter GY6 Crankshaft Racing Kit is the perfect upgrade for your GY6125 or GP / VP110 engines. With this kit, you can transform your scooter into a race-ready machine while maintaining its original look and feel. The kit includes all the necessary crankshaft parts, including the 3mm replacement for the GY6125 125cc and 150cc engines. This upgrade ensures smooth and powerful performance, without sacrificing fuel efficiency. The pin hole 15mm design offers a sleek and modern appearance, perfect for riders who want to show off their engine's performance without sacrificing style. The GY6 Crankshaft Racing Kit is not only a functional upgrade, but also a statement of engineering prowess and attention to detail.