Using this brake disc guard is easy. First, remove the front wheel spacer from your 2007 - 2023 Honda CRF 150 R or RB. Then, mount the guard in its place. You can choose from 6 colors to match your bike. When riding, the guard will protect your front brake disc from rocks and debris, and the vents will help cool the brake caliper for better performance. For maintenance, simply clean the guard regularly with a mild soap and water. Avoid using harsh chemicals that could damage the plastic or aluminum parts. If the guard gets damaged, replacement guards are available.