The purchase is for a set of engine guards for the above bike model. The engine guards feature removable skid plates can be inexpensively replaced without purchasing a new set of steel guards. The guards have three attachment points on each side and braced together to prevent them from rotating in the event of a low side. The engine guards are also braced together by a crossbar in order to further increase its strength. 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.