Front Sprocket 13/14/15/16/17T Teeth 428 20CrmnTi Sprocket Teeth Disk. Crafted from durable materials, this sprocket ensures long-lasting performance and reliability for your motorcycle. Easy to install and remove,the sprocket gear design kit is simple, light and small, easy to carry and use, convenient and practical. Easy to install and replace the broken one, no special tools needed. Made of good material, durable, not easy to rust and not easily deformed,for long time to use.