Bombshell Kit Fits 2007 to 2014 JK Wrangler, Rubicon and Unlimited;2 and 4-Door models;Dana 30 and Dana 44 axles;Made from 1/4 alloy steel;Includes: outer sleeves, inner sleeves and C gussets;Increases strength by nearly 60% JEEP WRANGLER (JK) ISLANDER MOUNTAIN RUBICON SAHARA SPORT UNLIMITED ISLANDER UNLIMITED MOUNTAIN UNLIMITED RUBICON UNLIMITED SAHARA UNLIMITED SPORT UNLIMITED X X 2007 2008 2009 2010 2011 2012 3.6L ERB (220) Pentastar 3.8L (3778cc) GAS Rock Slide Engineering Rock-Slide Engineering Bombshell Kit - AX-BS-100-D3044 AX-BS-100-D3044 Axle Truss