Application For Nissan Frontier 2005-2023 2WD 4WD **Does not fit PRO-4X models or vehicles with rear shackle suspensions. **Rear kit will work only for models with spring over axle suspension setup. Please check rear setup before ordering. **Factory 1/2" u-bolts will be replaced with upgraded 9/16" u-bolts which may requires enlarging retainer plate holes. Description Lift Height: 3 inch Front + 3 inch Rear Spacer Thickness: 1.57 inch (40 mm) Block Thickness: 3 inch (76 mm) U-Bolt Size: 9/16"-18 Square 11.22 inch (285 mm) Length Material: Aluminum+Steel Package Included: 2x Strut Spacers + 2x Rear Blocks + 4x U-Bolts .