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Nerf bars are metal extensions that mount on the side of a truck. They are generally made of steel or aluminum and can support up to 500 lbs. Some have rubber foot grips at the entryways, while others have no such feature. Some manufacturers also offer wheel-to-wheel nerf bars, which run the length of the …

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Fairings are parts of vehicles that enclose the cab and extend rearward. They may be made of thermoplastic elastomers, fiberglass, or other materials, and may be integral with the rest of the vehicle. In some cases, a truck’s fairing is merely a decorative piece, and has little to do with the actual design of the …

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