Condition: NewMaterial: UHMW-PE (ultra high molecular weight polyethylene), aircraft grade aluminum, steelNO CUT or plastic fairing modifications requiredFit Models: Zero2022 SR2020 - 2022 SR / F2020 - 2022 SR / SThis purchase is for a front axle slider that helps protect your bike in case of a low-side. It allows the fork to slide on the plastic puck instead of the fork itself. The installation is a simple bolt on with the bar going through the axle and one plastic puck on each side. The sliders are made of UHMW-PE (ultra high molecular weight polyethylene), a tough plastic with good strength, wear resistance and dimensional stability. It is more dimensionally stable than Nylon and used in many industrial ball bearing and friction reducing applications. The bolts are made of highest grade commercially available 12.9(177,000 psi in tensile strength). The long bar is made of billet aluminum. Rest assured that you are getting the best material commercially available. The frame sliders that you will receive will most likely be the ones pictured above. However, due to constant improvement, the frame sliders can sometimes vary slightly from those in the picture.