JL Aluminum Rear Inner Fender Liner (40 Inch Plus) for Big Tires
Looking to mount up 40" or larger tires on your JL? We designed this fender liner specifically to match our 40"+ Steel brackets (which are INCLUDED) that tie everything in the body back together after you do trimming to maximize clearance. Don't want to do any trimming? Check out our standard Rear Inner Fender Liners here!
- CAD Designed with maximum tire clearance and suspension up travel in mind (Trimming IS REQUIRED for this version!)
- Tested specifically with 40"-42" tires for maximum clearance and trimming without removing structural integrity in the JL body.
- Allows for 3/8" wheelbase stretch to the rear - so you only have to trim the back of the wheel well; not the front. This prevents you from getting any water intrusion into the passenger compartment/JL tub!
- Laser Cut and Precision CNC Formed from 0.09" 5052 Aluminum
- Quick bolt together assembly required for initial installation
- Arrives ready to powder coat if desired
- Sold as 1 pair (left/right)
- Designed to work with shocks from Factory to aftermarket large body with multiple bypass/reservoir setups
- Designed to work with factory shock mounts or RKs extended shock/coilover rear mounts (see Shock Compatibility below)
The Details
The factory black plastic "splash guards" you'll find in the wheel openings of your JL can leave a bit to be desired. Our new rear inner fender liners can be installed with factory fender flares, our JL Rear Fender deletes and are also compatible with our JL Rear High Line Fender Flares!
Our rear fender liners are laser cut in house from 0.09" thick 5052 Aluminum - which means they are 30% thicker than most 0.06" (16 Gauge) liners on the market, offering a bit more rigidity.
Above: How much you'll be trimming out. The "Before" shot. Note that we have temporarily removed the EVAP canister to prevent any damage to it during trimming!
Initial installation requires a quick bolt together assembly, and all required hardware is included. Installation requires DRILLING and CUTTING.
Above: "After" the trimming. Shown with Rear Fender Flare partially installed - sold separately and not included.
It also should be completed in conjunction with our 40"+ Kit Steel Brackets that insert into the body, and tie everything back in together since you've cut out some of your pinch welds that previously bonded multiple sheet metal bodies together.
Above: The 40"+ Kit Steel Brackets. This is what ties the body back together after trimming!
Above: The 40"+ Kit Steel Brackets installed.
Thanks to the rigidity of the panels and mounting locations on the body, these are entirely body mounted and do not require any fasteners or brackets to be tied into the frame rails of your JL; allowing your body mounts to flex properly without putting any load on your fender liners!
Above: The finished product. The 40"+ Rear Inner Fender Liners, 40"+ Kit Steel Bracket installed along side a JL Rear Fender Flare (sold separately.)
Shock Compatibility
We have been collecting 3D scan data from multiple Jeeps over the past couple of years. This has allowed to CAD design these rear inner fender liners to fit with shocks from factory to aftermarket big body shocks with multiple bypasses with reservoirs; using factory mounts or even the relocated and extended shock/coilover mounts from Rock Crawler Suspension. The short of list of compatible shocks include factory, ADS, Bilstein, King, Falcon, Fox, and Rock Krawler/RRD Shocks. There are always new shock configurations coming out for the ever popular JL platform, so if you have any questions don't hesitate to reach out to us and ask if another new option fits!
4xE Compatibility
The Jeep Wrangler 4xE has additional lines on the rear passenger side leading to the evap canister just in front of the tail lamp; and these extra components are routed through the wheel well where this liner is installed. We have confirmed with a test fit that these DO work without modification on the 4xE PHEV models!
Axle Compatibility: Rubicon vs Sport Axles
Above: A "Willys" trim JL flexing out with the rear inners installed. This JL is equipped with the narrow JL "Sport" axles, and wheel spacers. Some trimming may be required with narrow/Non-Rubicon axles in applications with little to no lift, due to the narrow axle width.
These are designed for maximum up-travel, however they are designed with Rubicon width tires/wheels in mind. If you are running JL "Sport"/Non-Rubicon width axles, either additional offset or some trimming may be required to clear the rear tires at full stuff.
If you are running Rubicon width or even wider axles, clearance is typically increased between the tire and inner fender liner, and should result in no rubbing and no modifications required.
Why next venture?
parts inspired by the trail
Our team got into the game after rock crawling, wrenching, fabricating and being inspired to design and build parts for what we love to do: hit the trail.
what our customers are saying
★★★★★They invited me and my whole crew in for a tour of the facility on our way to Moab. These guys not only produce amazing armor for your Jeep, they are really good people. So, I’ve been running their rear diff skid for 9 months and it has easily held up to everything I’ve thrown at it.
Gary Swogger
Felton, DE
★★★★★After this go around with Moab and Holy cross, the diff skids did their job and protected my Jeep. My rear aluminum bumper performed phenomenally on the trail!
Rennato Lopez
Colorado Springs, CO
★★★★★Can’t say enough about Dan and his ultra skilled team! Dan was able to get us in for a skidplate with UHMW & sliders for our JKUR. The fit, finish and quality are just out of this world! Can you say “stacked dimes”? Absolutely gorgeous welds…
Lance Wende
Montrose, CO
★★★★★2 years later I'm writing this review. I've beaten the crap out of this thing hitting rocks, winching, draging it down obstacles, and now exposed to the Florida elements. The bumper looks like it did the day they sent it. You will not find a better company to work with that cares about their clients and their products!
Kelly Colwell
Panama City, FL
★★★★★My rear Next Venture diff skid takes a beating! Best rear diff skid available. Well done!
Lee Bower
★★★★★Without a doubt, Next Venture Motorsports is my first stop for epic Jeep parts. Their JL aluminum front and rear featherweight bumpers are solidly built, easy enough to install, and crafted to perfection. I can't wait for more products for my 2 door JL!
Michael Collette
Kimberly, WI
★★★★★I like it because it lets you use factory fog lights if you want. They also have a featherweight aluminum option that doesn't have holes for fogs and is essentially a stubby bumper. I am very pleased with all of their stuff. [JL/JT Adventure Series Bumper]
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