Unlocking Proper Suspension Geometry with RPM Steering Fuel Tank Kits
There’s a point in every Wrangler or Gladiator build where bolt-on upgrades stop delivering meaningful performance gains. Bigger tires, stronger axles, and long-arm suspension systems all promise improved capability, but without the right packaging and geometry, those upgrades can never reach their full potential.
One of the most overlooked constraints in modern Jeep platforms is the factory fuel tank location. Mounted along the side of the frame, the stock tank occupies critical real estate needed for true double-triangulated suspension systems and optimized link geometry.
RPM Steering & Suspension fuel tank relocation kits for the Wrangler JKU, Wrangler JLU, and Gladiator JTsolve that challenge head-on by creating the space required for high-performance suspension design while improving protection, packaging, and trail confidence.
The Geometry Problem Most Jeepers Don’t See
Factory suspension layouts are engineered around compromises like cost, packaging, emissions equipment, crash standards, and mass-market drivability. For hardcore off-roaders and builders pursuing maximum articulation, stability, and traction, those compromises quickly become limiting factors.
When upgrading to triangulated rear suspension systems, builders need:
- Proper link separation and triangulation angles
- Improved anti-squat and roll center tuning
- Increased articulation without bind
- Strong mounting points positioned for optimal load paths
The factory side-mounted fuel tank often blocks ideal suspension link placement and forces compromises such as:
- Reduced triangulation angles
- Less efficient suspension travel
- Increased stress on mounts and joints
- Suboptimal ride characteristics on steep climbs or technical terrain
Relocating the fuel tank to a more central and protected position behind the axle frees up the chassis architecture and allows high-articulation suspension systems to work as intended.
Purpose-Built Fuel Tank Solutions from RPM
RPM’s aluminum fuel tank relocation kits are designed specifically to support advanced suspension geometry while maintaining trail durability and daily usability. Each system includes everything required to move the tank safely and efficiently.
Wrangler JKU Fuel Tank Relocation Kit
RPM’s 22-gallon aluminum TIG-welded tank for the JKU is engineered to create the clearance required for triangulated suspension setups while maintaining strong underbody protection.
Key advantages include:
- Frees critical space for long-arm and triangulated rear suspension systems
- Compact packaging — hangs only about 3.5 inches below the frame
- Durable 1/4-inch powder-coated steel skid plate mounting system
- Integrated breather and rollover valve provisions for safe operation
- Retains use of factory fuel pump and evap components
For builders pushing their JKUs into serious trail or rock-crawling territory. This relocation kit becomes a foundational upgrade, enabling suspension geometry that simply isn’t possible with the stock tank location.
Wrangler JLU Fuel Tank Relocation Kit
The JLU platform introduced new packaging challenges, but the goal remains the same: maximize suspension performance while maintaining structural integrity and protection.
RPM’s 22-gallon relocation system for the JLU:
- Opens space needed for optimized link triangulation
- Maintains high fuel capacity for extended trail range
- Uses heavy-duty skid protection to guard against impacts
- Packages tightly beneath the chassis, roughly 4.5 inches below frame level
- Supports high-clearance suspension designs for aggressive builds
For modern JL builds focused on both performance and reliability, relocating the fuel tank ensures the suspension can be tuned for predictable handling and improved obstacle clearance.
Gladiator JT High-Capacity Fuel Tank Relocation
The longer wheelbase and payload capability of the Gladiator make it an ideal candidate for advanced suspension systems, especially when it comes to overland or competition-focused builds. RPM’s 25-gallon aluminum tank system is designed to match that mission.
This kit delivers:
- Additional fuel capacity for extended range
- Weld-on frame stiffeners to reinforce mounting structure
- Skid plate protection for harsh trail environments
- Clearance for true triangulated suspension geometry
- Tight packaging — approximately 5.5 inches below frame
By integrating frame stiffening into the relocation system, RPM ensures the JT chassis can handle the increased loads and articulation forces associated with high-performance suspension setups.
Real-World Benefits on the Trail
Relocating the fuel tank isn’t just about making suspension installation easier, it also directly impacts several important aspects of vehicle performance, including:
- Improved climbing stability due to optimized anti-squat geometry
- Increased articulation and traction in uneven terrain
- Reduced suspension bind at full travel
- Better load distribution across suspension mounts
- Enhanced underbody protection in technical environments
For serious off-roaders, these improvements translate into greater confidence, smoother control, and the ability to tackle obstacles that would otherwise push a factory-configured Jeep beyond its limits.
Building the Foundation for a Complete System
RPM Steering & Suspension designs its fuel tank relocation kits as part of a broader performance ecosystem. When combined with triangulated rear suspension systems, long-arm link kits, and properly tuned shock packages, these tanks help transform Wrangler and Gladiator platforms into purpose-built trail machines.
In high-performance Jeep builds, suspension geometry is everything, and geometry starts with space.
By relocating the fuel tank, RPM gives builders the freedom to design suspension systems the right way from the start, unlocking capability that simply can’t be achieved within the constraints of factory packaging.
