1. This product is gearbox single chain design.. 2. Replacement for 2 stroke 47cc 49cc Mini Bike, Scooter, ATV, etc.. 3. Sprockets are suitable for T8F chain with 11T, 13T, 14T, 17T, 20T, total 5 sprockets.. 4. Made of material, can be used for a long time..
