GY6 transmission gear set 20% increase in speed
Performance Gear Sets for 20% increase in top speed. Remember it’s best to use this set up if you have a 170cc big bore kit, otherwise you are going to loose some acceleration. This gear ratios is for 150cc and 125cc GY6 4-stroke engines commonly found on Full-Size Street Scooters and Off-Road Vehicles. This kit will come with a case gasket, and gear oil.