NCY Performance Up-Gear Kit 14*36/37/38 | GY6 GY7 Options:14X37 providing enough power to overcome

providing enough power to overcome high-compression builds

Most vintage large-frame and small-frame scooters using 3

Stock GY6 transmission clutch and pulley assembly

NCY lightweight orange stator turbo fan for 50cc 139QMB engines and bikes running 125/150 GY6 engines

also available in silver

NCY Performance Up-Gear Kit 14*36/37/38 | GY6 GY7 Options:14X37 providing enough power to overcomeFine tune your GY6's final drive ratio with an NCY 14 tooth Counter Shaft Gear Wheel. Available in three driven gear options 36, 37, or 38 teeth this single gear change lets you shift the balance between top speed and off the line acceleration without splitting the cases. Fits both A block (54mm) and B block (57mm) GY6 engine families. ISO 9001 certified and made in Taiwan by NCY since 1997. Choosing Your Gear Ratio The stock GY6 150cc final drive is