JCR Rear Dagger Bumper install and Modification - Jeep Wrangler Forum

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Old 03-03-2014, 02:33 PM
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JCR Rear Dagger Bumper install and Modification

Last spring I bought a JCR Dagger Series rear bumper for my JK. I chose this bumper because it helped reduce the departure angle on the jeep. I liked how it was tight to the rear of the jeep and you can order it with lights, tow points, and a receiver.

When I received it I had mixed emotions on the quality.... The fit was perfect, but I questioned its durability and I didn't trust the receiver one bit for towing.

First step, clean and prep the steel for painting: This bumper came with a heavy amount of oil on it to keep it corrosion free. A heavy degreaser will help with this. Don't skimp on the cleaning. You may also want to hit the bare steel with a 200 grit sand paper to rough it up to give the paint a better surface to cling to. Once it is clean, DO NOT touch the metal with your bare hands. You will leave your oily finger prints on it and then have paint issues down the road.

Next step, paint. Rattle can job with 2 coats of primer and 6 coats of black.

Remove rear bumper: This is easy on a JK. 6 bolts and it was off. Another 4 bolts if you have a stock tow hitch.

Cut off rear cross member. That's right, you have to cut off your rear crossmember for this bumper, so consider this a permanent modification to your jeep. I taped off the tub with several layers of masking tape to help prevent accidental damage to the paint. You are cutting everything off that is just behind the rear most body mounts. Paint the bare steel afterwards.

Installed... (The first time.) Install is a bit tricky, as with other parts, start all of your bolts first and then tighten after you have managed to line up the bumper properly. I will note that at this point your spare may make contact with your bumper and you may need to adjust the spare height.

After several months of running this jeep I wasn't happy with the bumper. I decided to pull it off and make some changes.

I made three major changes. First, removed the original receiver tube because it was too flimsy and on the back side it made contact with the tub. Second, beefed up the bumper for towing. Third, cut a notch in it to be able to carry a larger spare tire in the future.

Cutting out the old receiver tube. Easy work.

Adding the spare tire notch: Limited on space because of the lights.

Fabbing reinforcement pieces: I used spare 2"X2"X3/16" tube for this.

Adding internal reinforcement: I added a bar all the way across the bottom of the bumper essentially recreating a rear cross member. Then I gusseted the heck out of the internal structure for the receiver tube.

Piecing together:

New receiver tube and added rings for safety chains. The new receiver sticks out of the bumper about a 1/2" more than the D-ring tabs. Not too worried about catching it on rocks.

Note: Forgot to get a picture of the backside after welding everything up... added several gussets to the back of the receiver tube.

Painting .... again.

Installed... the second time.

After thoughts: I probably could have made it pretty and done a better job on finish work, but then I thought about how its going to get beat up on the trail. So no point in getting everything perfectly smooth.

Cutting the rear cross member off a 2013 JK was a bit un-settling, but the result is a nicely tucked in rear bumper and I no longer have the boat anchor stock receiver point. Rear departure angle is much better now as the receiver tube sits 6 inches higher and is tucked in closer to the body.

Total time: 8 hours on the initial install which includes all paint and prep work plus cutting the jeep frame. Another 10 hours for removing the bumper the second time and making changes.
2013 JKU Rubi, Minor Mods: Sheldon
1974 CJ-6, 1-tons, 40's, 401 V-8, TH400, and lots of stuff: Panthro
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bumper , hitch , jcr dagger , towing

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