Using this AS3 rear sprocket is straightforward. Just replace your old sprocket with this one following the standard procedures for your Fantic motorcycle. When installing, make sure it's properly aligned to avoid any issues. As for maintenance, regularly check the sprocket for any signs of wear, like uneven tooth wear or cracks. Clean it occasionally with a mild detergent and a soft brush to keep the self - cleaning grooves clear. Avoid using harsh chemicals that could damage the anodised finish. Also, don't forget that this sprocket comes with a 12 - month warranty, so if you encounter any problems within this period, reach out to the UK - based company for support.