Using these AS3 Performance crash bars is a breeze. First, gather all the parts included in the package - you'll find all the brackets and bolts you need. Then, follow the fitting instructions step - by - step to mount the crash bars on your 2008 - 2012 BMW F 650 GS. When riding, these bars will protect your engine and fairings in case of an accident. As for maintenance, just give them a regular clean with a mild soap and water solution. Avoid using harsh chemicals as they may damage the textured matt black finish. Keep an eye on the bolts and brackets to make sure they're tight. If you notice any issues within the 12 - month warranty period, contact our customer service for assistance.