Using this AS3 front brake disc and caliper guard is easy. First, remove the left wheel spacer from your bike. Then, attach the aluminum mounting bracket in its place. After that, fit the plastic guard around the front brake disc and the lower part of the front brake caliper. Make sure it's securely in place. 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 or wear. If the plastic guard gets damaged, you can easily replace it. Keep the aluminum bracket clean to prevent corrosion. And remember, since it's available in 7 colors, you can choose the one that suits your bike's style best.