Savvy Offroad Aluminum Rear Ultra Highline Fenders | 2018–2026 Jeep Wrangler JL/JLU

Create the rear tire clearance needed for a serious large-tire build with Savvy Offroad Aluminum Rear Ultra Highline Fenders for the 2018–2026 Jeep Wrangler JL and JLU. Engineered for Jeep owners running 40–42-inch tires, these high-clearance rear fenders enlarge and raise the rear wheel opening to help reduce tire contact during suspension compression and articulation. The ultra-highline design creates more usable wheel-well space, allowing a properly configured Jeep to run larger tires without relying on excessive suspension lift. Keeping the Jeep lower helps preserve a lower center of gravity, improves stability on steep and off-camber terrain, and allows the rear suspension to use more of its available up travel before the tire contacts the outer fender. Constructed from lightweight, corrosion-resistant 5052 aluminum, Savvy rear highline fenders deliver trail-ready strength without the unnecessary weight and corrosion concerns of comparable steel fenders. Their clean, aggressive profile gives the JL or JLU a purpose-built appearance that matches its increased off-road capability. Whether you are building a low-center-of-gravity rock crawler, trail rig, overland Jeep, or aggressive street-and-trail build, Savvy Offroad Rear Ultra Highline Fenders provide the clearance, lightweight construction, and functional design needed for demanding terrain. Ships in raw aluminum and is made in the USA.

Why Rear Ultra Highline Fenders Matter

Large rear tires need room to move upward and articulate not just room while the Jeep is parked. Factory-style rear fenders can become a limiting point when running 40–42-inch tires. Adding more suspension lift may provide static clearance, but it also raises the Jeep’s center of gravity and can negatively affect stability, handling, suspension geometry, and driveline angles. Rear ultra highline fenders address clearance at the wheel opening itself. By raising and enlarging the opening, they allow the rear tire to cycle farther into the wheel well before contacting the outer fender. This helps builders maintain a lower, more stable stance while gaining additional tire clearance and usable rear suspension travel.

Actual clearance depends on the complete build, including:

• Tire size and actual measured diameter
• Wheel width and offset
• Axle width and position
• Suspension travel
• Bump-stop configuration
• Rear inner-fender clearance
• Body and suspension modifications

Key Features

• Designed for 40–42-Inch Tire Builds: Enlarged rear wheel openings provide additional clearance for properly configured JL and JLU builds running oversized tires.
• Run Larger Tires with Less Lift: Creates clearance at the body instead of relying solely on added suspension height.
• Improved Rear Suspension Up Travel: Allows the rear tire to travel farther into the wheel opening before contacting the outer fender.
• Lower Center of Gravity: Reducing the amount of lift needed solely for tire clearance can help maintain better trail stability.
• Lightweight 5052 Aluminum: Provides trail-ready durability without the unnecessary weight of comparable steel fenders.
• Corrosion Resistant: Aluminum will not develop the rust associated with unfinished or damaged steel components.
• JL/JLU-Specific Fitment: Designed for the 2018–2026 Jeep Wrangler platform not a universal fender.
• Functional Highline Design: Provides meaningful clearance rather than serving as only a cosmetic flare replacement.
• Clean, Aggressive Profile: Gives the rear of the Jeep a purpose-built appearance.
• Raw Aluminum Finish: Ready for paint, powder coat, or installation with a natural aluminum finish.
• Made in the USA: Designed and manufactured in America for demanding off-road use.

Vehicle Fitment

• 2018–2026 Jeep Wrangler JL 2-Door
• 2018–2026 Jeep Wrangler JLU 4-Door
  

Specifications

• Product: Rear Ultra Highline Fenders
• Location: Rear driver and passenger sides
• Material: 5052 aluminum
• Finish: Raw aluminum
• Tire Application: Properly configured 40–42-inch tire builds
• Mounting: Vehicle-specific mounting locations
• Installation: Some drilling required for rivet nuts, if applicable
• Manufacturing: Made in the USA
• Brand: Savvy Offroad

Rear Highline Fenders vs. More Suspension Lift

Adding suspension lift can create tire clearance, but it also raises the Jeep’s center of gravity. Excessive lift can affect stability, steering geometry, driveline angles, handling, and suspension performance. Rear highline fenders create clearance at the wheel opening. This gives the tire more room during compression and articulation without requiring the Jeep to sit unnecessarily high. The objective is not simply to make 40–42-inch tires fit while parked. The tires must also clear as the axle moves through its full range of travel on the trail. For large-tire JL and JLU builds, increasing wheel-opening clearance is generally more effective than adding lift solely to move the body farther away from the tires.

Best For

• JL and JLU builds running 40–42-inch tires
• Low-center-of-gravity rock crawlers
• Jeeps where factory rear fenders limit suspension up travel
• Builds experiencing rear tire contact during articulation
• Owners who prefer aluminum over heavier steel fenders
• Competition-inspired Jeep builds
• Daily-driven Jeeps that also see serious trail use
• Owners matching Savvy front ultra highline fenders

Why Choose Savvy Offroad Rear Ultra Highline Fenders?

Savvy Offroad develops lightweight Jeep armor around real off-road performance. These rear ultra highline fenders are designed to provide usable tire clearance, reduced vehicle weight, corrosion resistance, and a clean platform-specific fit. Unlike cosmetic flare replacements, the ultra-highline design addresses clearance at the rear wheel opening. This allows properly configured 40–42-inch tire builds to use more suspension travel while maintaining a lower and more stable stance. For customers searching for Jeep JL rear highline fenders, JLU aluminum rear fenders, Jeep fenders for 40-inch tires, or high-clearance Jeep rear fenders, Savvy provides a functional, trail-ready solution made in the USA.

Frequently Asked Questions

Do these fit both the two-door JL and four-door JLU?

They are intended for 2018–2026 Jeep Wrangler JL and JLU models. 

Do these fit the Jeep Gladiator JT?

No. The Gladiator uses a pickup bed with a different rear wheel opening, mounting structure, and body geometry. A JT-specific rear fender is required.

What tire sizes will they accommodate?

These fenders are designed to provide clearance for properly configured 40–42-inch tire builds. Actual clearance depends on tire dimensions, wheel offset, axle width, suspension travel, bump stops, axle position, and inner-fender configuration.

Will these guarantee that 42-inch tires never rub?

No single fender can guarantee complete clearance on every build. Suspension travel, bump stops, axle placement, wheel offset, inner fenders, and actual tire dimensions must all be properly configured.

Can I run less lift with these fenders?

The raised wheel opening may allow properly configured Jeeps to run larger tires with less lift than factory-style rear fenders require. The minimum lift depends on the complete suspension and axle setup.

Is body or frame cutting required?

No frame cutting required. Body must be drilled for rivet nuts. 

Do I need high-clearance rear inner fenders?

They are strongly recommended for maximum usable clearance. The outer highline fenders increase clearance at the body, but factory liners or low-clearance inner fenders can remain a tire-contact point.

Should I install matching front highline fenders?

Matching front fenders are recommended for balanced appearance and complete front-to-rear tire clearance. Pair these with Savvy Offroad Aluminum Front Ultra Highline Fenders for Jeep JL/JLU/JT.

What finish do they have?

The fenders ship in raw aluminum. They can be painted, powder coated, or left natural. Raw aluminum will not rust, although normal surface oxidation and cosmetic changes can occur.