These rear upper shock mount caps are a great addition to your 08' RZR if you're a hard driver. The factory upper shocks mounts were especially weak on the 08' RZR's. In 09' this was changed but it's still not sufficient. These caps fit over top of the factory tabs for the rear upper shock mounts. They encapsulate the mount and tie into the frame in two additional places which spreads out the impact load more evenly. These caps come complete with powder coat and hardware. They will fit all 08' RZR's with no modification to the existing tabs. This kit will fit the 09 RZR but the lip on the newer models factory tabs will need to be cut off. For either year there are two holes per side to be drilled through the frame as well.