The OEM spoilers are now extinct (brand new anyways). They were extremely expensive and prone to cracking on the wing’s upright posts. Now there is a solution. These wings are now produced in full fiberglass with carbon fiber caps that cover the bolts. These are more sturdy than the factory plastic uprights and aluminum center blade design. These spoilers come with all of the mounting hardware necessary for install. The wing’s small end caps do need to be epoxied on after the wing is installed. It is important to assemble the wing loosely before installing it onto the vehicle. After bolting it to the car, you will tighten the center blade to the upright posts. If you tighten the center blade before installing it on the car, it may not sit flush with the hatch!