Rock Hard 4x4 is very proud to offer the Heaviest Duty Transmission Crossmember for the Jeep Wrangler JK. Upgrade your factory 14-gauge stamped steel transmission crossmember to their 3/16" + 3/16" MASSIVE 3/8" DoubleWall Crossmember! The top and bottom plate 3/16" thick design gives you a total of 3/8" plate steel strength! Ease of Install - In under 1 hour - including removal of your factory crossmember - you can complete this critical upgrade. Rock Hard designed this crossmember to be a drop in replacement for your factory transmission crossmember. Simple hand tools required - no drill cutting or welding! Precision Made Strength - Each crossmember is laser cut from 3/16" thick steel and coated in their weather and debris resistant powder coat finish. Strength is proven on virtually all Jeep enthusiast forums with glowing reviews. Since 2007 their 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.
The concept for Nebraska-based Rock Hard 4x4 Parts was hatched back in the 1980s and evolved from DIY cage installation to a full-service manufacturing facility. Employing state-of-the-art CNC machining centers, outstanding craftsmanship and laser cut precision, Rock Hard takes the bolt-in design of bumpers, skid plates, cages and sliders to the next level. Their patented locking collar distinguishes itself in the aftermarket industry and all of their exterior products make off-roading in Jeeps safer and smoother. Protection is paramount on the trail and Rock Hard's products are easy to install, affordable and exude superior style. Shop Rock Hard 4x4 Parts Now