Rock Hard 4x4 is very proud to offer the Heaviest Duty Transmission Crossmember for the Jeep Wrangler JK 2/4DR 2012 - 2018 3.6L. Upgrade your factory 14-gauge stamped steel transmission crossmember to our 3/16" + 3/16" MASSIVE 3/8" DoubleWall Crossmember! The top and bottom plate 3/16in thick design gives you a total of 3/8in plate steel strength! Designed to fit 2012-2018 3.6L engines.
In under 1 hour - including removal of your factory crossmember - you can complete this critical upgrade. We designed this crossmember to be a drop in replacement for your factory transmission crossmember. Simple hand tools required - no drill cutting or welding!
Each crossmember is laser cut from 3/16in thick steel and coated in our weather and debris resistant powder coat finish. Strength is proven on virtually all Jeep enthusiast forums with glowing reviews. Since 2007 this skid plate system has been the undisputed leader in undercarriage protection.
RH4x4 crossmembers are very recognizable for two major reasons: beefy unmatched strength and laser precision fitment. What makes up a RH4x4 crossmember is what makes it so strong.