A. This is a sprocket pinion specially designed for 49CC small mini motorcycles and bicycles. It is exquisitely designed and can precisely fit specific small vehicle models, providing stable and efficient power transmission for the vehicle's transmission system. B. The product comes in a variety of specifications, including 16T (50G), 18T (90G), 22T (150G), and 28T (180G). These options can meet users' different needs in terms of vehicle performance and usage scenarios. Whether you are seeking a light and flexible riding experience or require stronger power output, you can find a suitable specification. C. It has a wide range of applications and plays an important role in 49CC small mini motorcycles and bicycles. It can effectively improve the overall performance of the vehicle, making the ride smoother and easier. D. In addition, it is quite popular in regions such as Africa, Europe, South America, Southeast Asia, North America, Northeast Asia, and the Middle East, and is an ideal choice for small vehicle enthusiasts.