R&G engine case slider (left hand cylinder) for BMW S1000RR '10-'16, HP4 '13-'14, S1000R '14-'16 & S1000XR '15-'16 fits neatly and easily to the existing engine case and will provide additional protection in the event of a drop. Fitted with the use of a tough silicon sealant (provided with the kit) for secure adhesion.