1999-2013 GM 11.5" 14 Bolt 4340 Chromoly Rear Axle 30 Spline (YA WGM14T-30-38) fuel-pump We recommend 8063-30 front coil

We recommend 8063-30 front coil springs and 8064-10 rear coil springs for 37-40 inch tires

VAN COMPASS FRONT AUXILIARY SHOCK MOUNTS REQUIRED

5-inch Coil Spring Front Lift Kit is a premium leveling suspension system engineered for Super Duty Diesel trucks

Featuring 8-layer oiled cotton gauze and proprietary filter oil with advanced tackifiers

1999-2013 GM 11.5" 14 Bolt 4340 Chromoly Rear Axle 30 Spline (YA WGM14T-30-38) fuel-pump We recommend 8063-30 front coilDescription Yukon high performance axles are built with high tensile strength 4340 chromoly, use superior production methods that include cold roll formed splines, and feature advanced induction coil heat treating to create an axle of unmatched quality and durability.