RAD Motorworks 2013-17 BMW GS Adventure LC Engine Valve Cover Guards. Our engine guards are made of billet aluminum, providing the strength to protect your engine valve covers during the unfortunate event when your bike tips over. The engine guards are mounted to the stock tubular GS Adventure engine guards via machined billet aluminum clamps and stainless steel fasteners. Our machined clamps are extremely secure, requiring only two clamps per guard. Avaliable in Silver and Black.