RockTrix Front Leveling Kit | 3" Lift | Carbon Steel Leaf Spring Mini Plates Blocks & U Bolts - for 1999-2004 Ford F250 F350 Super Duty Excursion 4x4 (March 1999+ Production) Authentic RockTrix Leveling Kit. Settle For Nothing Less. [CONTENTS] (2) High-Grade Carbon Steel Leaf Packs. (4) Extended U-Bolts. (2) Panarm Drop Spacers. Hardware (Nuts/Washers/Bolts) as shown in pictures. [LEAF PACKS] Made to precise specifications for guaranteed fit and lift height. Undergo an electrophoretic coating process to offer quality appearance and superior rust prevention. Mounting up 36  38 tires will be a breeze [U BOLT INFORMATION] Square Bend / Shape | Length: 12" | Width: 3.15" (Inner Diameter) | Threading: M14x1.5 Extended U-bolts included to ensure proper thread engagement when securing your lift pack and leaf springs to the vehicle. <span class="a-text-bold">Lift Height</span>: 3.0 inches <span class="a-text-bold">Plate Material</span>: Steel <span class="a-text-bold">Coating</span>: Electrophoretic <span class="a-text-bold">Hardware Grade</span>: 8 <span class="a-text-bold">U-Bolt Bend Shape</span>: Square <span class="a-text-bold">U-Bolt Length</span>: 12&#034; <span class="a-text-bold">U-Bolt Width</span>: 3.15&#034; <span class="a-text-bold">U-Bolt Threading</span>: M14x1.5 The included Mini Leaf Packs are made of high strength steel to precise specifications for exceptional fit and stability. Designed with an effortless install process in mind. Install will take approximately 2 to 3 hours with common hand tools. No cutting, welding, or any other form of modification required. Accommodates up to 35&#034; - 37&#034; tires. U<span class="a-text-bold">-BOLT SHAPE:</span>  These are square-shaped ubolts. It is NECESSARY to check your current u-bolt shape to confirm it matches.S <span class="a-text-bold">AFETY / INSTALL WARNING:</span> Installation should only be performed by a trained professional.L <span class="a-text-bold">IFT HEIGHT:</span> The lift specified above is only applicable if you have not added / changed other suspension components.A <span class="a-text-bold">LIGNMENT:</span> It is necessary to get an alignment after the installation of this item to achieve the full lift height.F <span class="a-text-bold">ITMENT:</span> Use the Applications listed above. If your vehicle is not on the list, message us so we can help find the correct item.