(approx) 3 Hours
Light to Moderate mechanical skill required.
- How to Install Fab Fours JK Grumper on your Wrangler
$1,499.99 (kit)FREE Shipping
Hey, guys. So, today I'm here with Fab Fours Grumper. This is obviously gonna be a love it or hate it kind of mod, but if you love it, this is gonna fit on your '07 to '18 Wrangler and give you full front-end protection as well as a very aggressive look. This thing is gonna be made of quality materials, and it's gonna give you a bunch of benefits that your stock setup is unable to give you. At the moment, this is gonna be $1,500, which is a little steep for a front bumper and grille combo, but it is very unique, and there's nothing else like it on the market.Install is gonna be pretty simple, but there will be drilling and wiring required, so it gets a two-out-of-three wrenches on the difficulty meter for me, and now I'll show you how I installed this. The tools that we used for this install were a drill with a step bit, an impact wrench, a half-inch, three-eighths inch, and a quarter-inch drive ratchets, a flathead screwdriver, a 13-millimeter wrench, an 8-millimeter Allen key, a three-sixteenth-inch Allen key, a 10-millimeter socket, a 13-millimeter deep socket, an 18-millimeter deep socket, a 19-millimeter deep socket, safety glasses, pliers, and a wire tool. So, the first thing we need to do before we install our Grumper is get our front bumper off. So, if you have a plastic insert in between your grille and your bumper, you can take out those pop clips and take that out, and then you can unclip your fog lights, and then we can unbolt the bumper.So the stock bumper is gonna be mounted up with four nuts on either side. We're gonna remove those with an 18-millimeter socket. After all of your nuts are uninstalled, we can go ahead and remove the bumper. So, now our next step is to open up the hood and pop off our grille. So, now we can remove our six pop clips. I'm gonna use a flat head screwdriver. If you are using a flathead screwdriver, just be careful that you're not scratching your paint on your grille. Or you can use a trim removal tool, but I find this a little bit easier. So, after we have our six pop clips out, we can pop off our grille and unplug our turn signals. Just be careful when you're popping this off of your turn signal wiring harnesses. So, sitting these two side-by-side, you can tell that there's a big difference, visually and performance-wise. So, this new Grumper is gonna take the place of both your stock grille and your stock bumper. Your stock grille and your stock bumper are made of plastic, and they don't provide you as much front-end protection as this Grumper will. This is made of 11-gauge steel and is gonna provide all of that front-end protection that you really want out of your Wrangler.This is also gonna give you a couple more benefits that your stock components will not. Along with the aggressive look and being completely customizable, this will have a couple of D-ring mounts for recovery. This is gonna have a universal winch plate, and it's gonna act as a stubby bumper, so you get more tire clearance off-road. Now, let's get this thing ready to bolt up to the Jeep. So, before we install our Grumper onto our Wrangler, we have a little bit of assembly to do. So, we're gonna start with the grille. So, this is gonna go around the back and bolts up through here. Once you have two on, that should keep it still enough where you can bolt up the rest. So, I wouldn't tighten anything down just yet because this is a moving piece, and you will have to adjust it to get all of your bolts in.Now, you can tighten down your bolts with a three-sixteenth-inch Allen key and a 13-millimeter socket. So, these bolts are gonna add to the aggressive styling. This is just gonna give it a riveted look and that off-road aggressive look. So, before we flip the Grumper over and install our headlight inserts, I wanted to install this accent plate. And this Grumper is gonna come with a matte black powder coat finish to resist any rusting on the metal. But this is one of those modular pieces that a lot of people customize to whatever color scheme that you're running on your JK. So, let's go ahead and install this with the same hardware that we used for our grille. So, it might be a little bit tricky juggling the plate and all of your hardware, but as soon as you get one bolt in, it will hold the plate up for you, but you still have to juggle the other one. So, then you can use your three-sixteenth-inch Allen bit and 13-millimeter socket. Tighten those down. Cool.Now, we can flip our Grumper over and install our headlight inserts. Now, you can install your headlight insert, and we will have to orient this. So, once you have that positioned where you want it, you can bolt up your hardware. This is gonna be the same hardware that we used for the front of the Grumper. So, now we can tighten down those bolts, but I would recommend, instead of a 13-millimeter socket because we are in a tight space, that you use a 13-millimeter wrench. So, since we're completely deleting our grille, Fab Fours did supply us with some turn signals, so you can install those at this time. Just gonna pull the wires through the back. And once the Grumper is actually bolted up and in position, then you can wire these into your existing turn signal wiring harness. And Fab Fours did also supply a wiring diagram for you to do that. So, I would let that hang and then get your grommet in first. Then you can place your turn signal. And then you can wiggle that into place.So, these are gonna be a new LED. So, Fab Fours also did supply you with some resistors in order to stop hyper flashing because of the lower resistance on the LED. So, in order to mount our Grumper up, we need to widen this upper outward hole to a nine-sixteenth of an inch. So, this is already a half-inch, and we're just using a step bit to go one step bigger. So now, with the help of a friend, you can install your Grumper.So, now that we have our Grumper attached, we can go around and tighten all the bolts with a 19-millimeter socket and an 8-millimeter Allen key. Once your bolts are all tightened down, all you have to do next is wire your turn signals into your stock wiring harness. Then you can close the hood, and you're all set. So, in order to wire up our turn signals, first, we have to cut off our factory harness. So, before we cut off our factory harness, I would recommend unconnecting your battery terminals, and then we can go ahead and cut this off. I would recommend you keep this portion if you ever want to put your Jeep back to stock, but if you don't plan on putting it back to stock, you won't need this anymore since it will be wired into your Grumper.So, we have already had to do a repair. I have unharnessed this, but we are gonna cut these at the same level that this wire is cut. After you cut those, you can strip your wires. So, your high element positive that will actuate your turn signals to blink will be your red wire on your Fab Fours wiring harness and your white wire with a pink stripe or a white wire with a gray stripe on your OEM wiring harness. So, your low element positive, which will be your standard marker light, will be the black wire on your Fab Fours wiring harness and a white wire with a tan stripe or a white wire with a green stripe on your OEM wiring harness. Lastly, our ground wire will be the white wire on the Fab Fours wiring harness and obviously your black on your OEM wiring harness.Now, we can take a 14-gauge wire butt connector and attach it to our Fab Fours wiring harness. Now, you can connect the white Fab Fours wire to your black OEM wire. Now, you can connect your red wire to your white and gray or white and pink, depending on which side you're on. Since we're on the driver's side, it's gonna be white and gray. Now, we can run our black wire into our white and tan wire, or our white and green wire. Since we're on the driver's side, it's gonna be the white and green wire. So, after our turn signal wiring harness is connected, we can go ahead and connect our new resistor. So, Fab Fours has given us some vampire clips that we can tap into our wiring with. So, we will be tapping into the high element positive, which will be our Fab Fours red wire and the ground, which will be our white wire. So, you can prepare the resistor and strip the wires.Now, you can insert your ground wire into your vampire clip. So, after you have your ground wire in, you can insert one side of your resistor. Holding those wires together, you can clamp down on your vampire clip, tapping into your wire. After that is tapped into, you can clip that and move onto connecting the other side to your red high element wire. Now, we can attach our vampire clip onto our high element positive or red Fab Fours wire. Once that is in the clip, we can attach the other side of our resistor and hold that there while we clamp that down. After that's tapped into, we can close our clip. Now, this resistor is gonna have two spots where you can bolt this up. You can bolt this up anywhere underneath here. Be careful because these will get hot. So, you can mount them up wherever you like. You can even mount them back on the Grumper if you'd like to tuck the wiring. This resistor is provided so your lower resistant LED will not hyper flash while you turn on your turn signals and so forth. So, that's it for my review and install on the Fab Fours Gumper. For more videos like this, keep it right here at extremeterrain.com.
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Features, Description, Reviews, Q&A, Specs & Installation
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Fitment: 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Fab Fours GR1000-1
CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
May 07, 2019
Love the looks of it and it’s easy to install would recommend if you want your Jeep to look aggressive!Helpful (1)
April 04, 2019
Very Concealed, Very Protective.
This thing is great. With the exception of the tiny turn signal lights, fog light delete, and ridiculously large D-ring shackles. Most people don't even know a winch is there unless pointed out. Also, I got into an accident with this. I have the full-width version which is an extra $400. However, a car hit this at about 60 MPH and was totaled. My airbags didn't even fire, and the jeep was able to drive away under its own power. This product saved the jeep from being totaled by insurance.Helpful (2)
December 01, 2018
This grille/bumper would be better if it followed the hood and fender lines better.Helpful (9)
September 26, 2018
This makes my Rubicon look very grumpy!! I love it. The wiring instructions were off but overall easy to install and very helpful customer service!!!Helpful (9)
October 10, 2017
Very easy to put on. Changes the entire look of the jeep. Rubicon looks super grumpy!!!!Helpful (13)
July 01, 2017
This grumper is awesome execellent construction fairly easy to install only difficulty was the led blinkers. The instructions talk about colored wires that aren't there. Over all a great productHelpful (13)
November 29, 2016
Looks great and packeged very nice. Came with detailed instructions for the whole instal. The only issue I had was the blinker wire instructions says it's yellow white and black but it's red white and black. This grumper is great and makes a huge difference for looks and tire clearance. Best looking bumper I ever bought worth the high price tag. I had my inserts painted to match my jeep it was easy.Helpful (17)
Good evening dear seller, I own a Jeep Wrangler TJ 4L year 2006, is it possible to assemble the fab fours front stubby grumper - matte black on my model ? And if so, did you send to Italy, Thanks by Steve (Novara Piemonte IT)
This is specifically designed for the JK, and will not fit on the TJ.
Once the stock fog lights and bumper are removed what would be recommended to do with the fog light wiring?
It is recommended that tuck the harness in a safe place where it will not be damaged.
would the JL Grumper fit a JK ?
How do you address the fog lights? is it fog light delete? Are there any type of turn signal kit that would fit the little triangular cutout below the headlight?
This item does delete the fog lights without some modifications. This also includes maker lights for the front as seen in the pictures, just not in the triangle openings.
Any way to make this work with a 1" to 1.25" body lift?
This product cannot be installed with a body lift.
The Barricade Front Skid Plate will not work with the Fab Fours JK Grumper bumper due to the different mounting positions.
The Fab Fours Grumper weighs approximately 102 lbs.
The Fab Fours JK Grumper will work with any winch with a 10x4.5 bolt pattern, including the Gen 2 Smittybilt X20 12K Wireless Winch.
This can be painted with full preparation, there are a few customer submitted photos showing portions of the Grumper painted.
The Fab Fours JK Grumper Bumper is designed to be both Grille and Bumper already. Unfortunately adding a bumper to this would not be feasible.
The Fab Fours JK Grumper will not fit the 2006 LJ unfortunately. Right now we do not have anything similar to that for you TJ unlimited.
The Fab Fours JK Grumper will accept any winch with the standard bolt pattern, like the Zeon 12.
The Fab Fours JK Grumper will have small button head turn signal on each side of the grille, below the headlight. These can be seen illuminated in several customer submitted photos for a visual.
Thank you for your question! The Grumper will not work in conjunction with the Fab Fours Vengeance with No Guard because it will have clearance issues with the hooks on the bumper.
The Fab Fours JK Grumper does not have provisions for OEM fog lights, and will remove your OEM bumper where the fog lights originally mounted. Because of this, you will be unable to utilize your OEM fog lights.
(approx) 3 Hours
Light to Moderate mechanical skill required.
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