Using this AS3 rear brake disc is straightforward. Just install it on your compatible KTM model as you would with a regular brake disc. When installing, make sure it's properly aligned to ensure the best braking performance. It's highly recommended to use AS3 Performance brake pads for optimum braking. For maintenance, keep an eye on the ventilation slots. Make sure they're not blocked by dirt or debris. You can clean them gently with a soft brush. Also, regularly check the disc for any signs of excessive wear. If you notice any abnormal wear or damage, it's best to replace the disc. This brake disc comes with a 12 - month warranty, so if you have any issues during this period, don't hesitate to contact the manufacturer.