Tyger Auto TG-AM2C20108 Star Armor Kit (for 1999-2006 Silverado/Sierra Crew Cab | Textured Black | Side Step | Nerf Bars | Running Boards) IMPORTANT: Only fit Crew Cab with 4 full-size doors. NOT for Extended Cab with 2 full-size front doors & 2 suicided rear doors.(Please check the Cab Size picture.) TYGER unique STAR metal step pads serve a helpful step in and out of the cab. Particularly useful on lifted trucks. Dual girder system provides maximum protection for underside from damaging impacts Up to 300 LBS weight capacity for each side. Heavy-duty 2inch diameter tubes. One-piece design. Dual stage powder coated textured black finish Easy Bolt-On installation. No drilling required. (DIY instruction included in the package.) TYGER No-Hassle 5 year warranty against manufacturing defects