The RB20 Slim Line Running Boards offer the same heavy duty toughness as the original RB Series, but with a slimmer design that fits tighter along the cab for increased ground clearance when off-roading. Constructed from 16-gauge zinc-coated galvanized steel, the Raptor-inspired boards were built to protect your panels from flying debris while providing a full-length step platform. The modern, bullet-stamped design is 5 1/2 inches across at its widest point (compared with 7 1/2 inches of the original RB20) and are offered in cab-length sizes that fit most popular trucks, Jeeps and SUVs. RB20 Slim Running Boards come with a Limited Lifetime warranty on materials and construction and a 5 year warranty on the the Bedliner Finish. RB20 Slim Line Running Boards offer a rugged, full length step. The Raptor-inspired design is available with protective bedliner coating or textured black powder coat finish. 2018-2024 Jeep Wrangler (Doors: 4 & Body: Sport Utility & Mfr Body Code: JL); 2021-2024 Ford Bronco (Doors: 4 & Body: Sport Utility)