Wunderlich - Valve Cover & Cylinder Protectors for BMW R 12Additional protection for the valve covers and cylinders of the BMW R 12 boxer is of particular importance as the cylinders of a BMW boxer are exposed. A fall, slip, or scraping against a plastered wall while maneuvering can easily cause mechanical damage up to and including grinding through the valve cover, or at the very least, cause annoying scratches. Function and Product Features Reliable protection of the valve covers against the consequences of