Using your AS3 front brake disc and caliper guard is easy. First, remove the left wheel spacer from your Honda motorcycle. Then, attach the aluminum mounting bracket in its place. Next, install the plastic guard around the front brake disc and the lower part of the caliper. Make sure it fits snugly. When riding, the guard will protect your brake components from dirt, rocks, and other debris. As for maintenance, regularly check the guard for any signs of damage. If you notice cracks or excessive wear, replace the plastic guard. It's also a good idea to clean the guard and the mounting bracket after each ride to keep them in good condition. Keep in mind that this guard is specifically designed for the listed Honda models and 270mm oversize discs, so make sure your bike meets these requirements before installation.