Rubicon Express Frame Crossmember

Rubicon Express Frame Crossmembers: The Foundation of a Serious Jeep Build

When you commit to a long-arm suspension upgrade, the factory crossmember simply wasn't designed for the job. That's where Rubicon Express steps in — a brand that has been engineering purpose-built Jeep suspension hardware since 1996. When Rubicon Express was founded, the mission was clear: to create the ultimate Jeep suspension systems capable of conquering the most challenging trails. Their frame crossmembers are a direct expression of that philosophy — structural components designed not just to fit, but to perform under extreme stress.

Why the Crossmember Matters

A frame crossmember is far more than a simple mounting bracket. In a long-arm conversion, it becomes the central hub of your suspension geometry. The long arm conversion pan is the heart of the RE7200 series lift kits, serving as the new mounting point for all of the control arms as well as the transmission and transfer case — with brackets designed to strengthen the frame and a convenient drop-out center section that allows for easy transfer case and transmission service without removing suspension components.

The pan also increases ground clearance by nearly an inch — a meaningful gain when you're navigating rocky terrain and every millimeter counts. This level of functional engineering is what separates a Rubicon Express crossmember from a generic bracket.

Extreme-Duty Construction Across Jeep Platforms

Rubicon Express offers crossmember solutions across a range of popular Jeep platforms. Their lineup includes:

• TJ Wrangler (1997–2002): The RE4102 Extreme-Duty Crossmember is designed specifically for long-arm suspension on 1997–02 Jeep Wrangler TJ models, featuring a black powder coat finish and built for use with Rubicon Express long-arm control arms.
• JK Wrangler (2007–2018): The JK crossmember is a 3-piece set that bolts together for an exceptionally rigid assembly, replacing the single-piece factory crossmember.
• JL Wrangler (2018+): The full-width heavy-duty transmission crossmember for JL models is designed to deliver more durability and frame rigidity than the competition.
• Cherokee XJ (1984–2001): The XJ front control arm mount, used in the RE6300 Long Arm kit, is designed to take a beating while still allowing the XJ unibody to flex as designed.

Built by Jeep Enthusiasts, for the Trail

Located moments from the Rubicon Trail, Rubicon Express products are real-world tested to ensure the highest quality, function, comfort, and safety. This proximity to one of North America's most demanding off-road trails isn't just a marketing point — it directly informs how these components are engineered and validated. Today, Rubicon Express is considered the industry standard in aftermarket Jeep suspension and drivetrain products.

Whether you're building a dedicated rock crawler or a capable daily driver that moonlights on the trail, Rubicon Express frame crossmembers provide the structural backbone your long-arm suspension demands. Browse the full selection of frame crossmembers or explore everything Rubicon Express has to offer for your Jeep build.