Performance Gear Sets for 150cc and 125cc GY6 4-stroke engines
Performance Gear Sets in a wide variety of prepackaged gear ratios for 150cc and 125cc GY6 4-stroke engines commonly found on Full-Size Street Scooters and Off-Road Vehicles.
Choose from 14, 15, & 16 Front Tooth combinations and 36, 37, & 38 Rear Tooth combinations.