This purchase is for one set of engine guards for the above bike model. The replaceable skid plates can be inexpensively replaced without purchasing a new set of steel guards. The steel tubing is bolted to the engine mount of the bike and the skid plate is bolted onto it. The engine guards has two attachment points on each side and braced together to prevent them from rotating in the event of a low side. Braced together in the middle to its strength and protection. We use highest grade commercially available 12.9(177,000 psi in tensile strength) wherever possible. Rest assured that you are getting the best material commercially available.