PISTON RINGS (8),ZERO GAP MOLY,4"+.030" Column Mounts LASER-CUT BRACKETS COMPATIBLE WITH ORIGINAL

LASER-CUT BRACKETS COMPATIBLE WITH ORIGINAL FRAMES AND AXLES

FITMENT WITH OTHER AXLE BACK UNITS IS NOT GUARANTEED

BODY COMES COMPLETE WITH BEARINGS & SEALS

2017-2020 YUKON XL

Kit works well with the sm300 pro shocks (shocks not included)

PISTON RINGS (8),ZERO GAP MOLY,4"+.030" Column Mounts LASER-CUT BRACKETS COMPATIBLE WITH ORIGINALZERO GAP MOLY HIGH PERFORMANCE PISTON RINGS SPECS: *4" +. 030" BORE *1 16" TOP RING THICKNESS *1 16" MIDDLE RING THICKNESS *3 16" OIL RING THICKNESS DESIGNED TO STAND UP TO THE RIGORS OF RACING & HIGH PERFORMANCE STREET USE, WHILE PROVIDING LONG LASTING LIFE THESE RINGS FEATURE: *PLASMA COATED, BARREL SHAPED, DUCTILE IRON TOP RINGS THAT SEAL AGAINST BLOW BY WHEN THE PISTON ROCKS IN ITS BORE, *TAPERED SECONDARY RINGS THAT SEAL AGAINST THE OIL CONTROL