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Bump Stop question

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Old 06-30-2017, 04:49 AM
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Default Bump Stop question

I recently put 37s on my 2014 JKUR. Now, one issue I'm having is the tire is rubbing the body of the Jeep when the tire is full stuffed. It is just barely rubbing, but it is making contact with the metal. I think I could trim a little metal but I'm not quite ready to do that yet. So, I'm thinking I need to go a little bigger on the bump stops. I have the Mopar Stage 3 lift on it so it already has aftermarket rear bump stops I just need a little bit more back there. Is there some way I can extend or add a spacer of some sort to give me just a bit more, I'm thinking 1/2 inch to 1 inch would do it? What suggestions do you have or what product would you recommend?
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Old 06-30-2017, 05:38 AM
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Metal cloak have bump stops that stack so you can fine tune the adjustment. Depending on what your rear axles side has now you can always buy some thick aluminum plate and install on the perch.
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Old 06-30-2017, 05:50 AM
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I ponied up for the adjustable MC rear bumps. Really hated to spend that much for bumps, but I knew down the road I have a couple adjustments to make and having bumps I could tweak easily in 1" increments made sense. As Dirtman suggested, maybe add some flat stock to the perch if you need just a little bit. If you need a full inch, maybe a hockey puck could work.

I presume the trimming your trying to avoid is seam at the top of the rear wheel well.
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Old 06-30-2017, 07:24 AM
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I haven't seen the metalcloak adjustable stops before. I just ordered the 2" option, that should be enough. Thanks for the input.
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Old 08-10-2017, 12:11 PM
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i have a question about bump stops.
my JK have 4'' lift and 35'' tires without bump stop! but i dont know if come the time to install bumps!
before, i removed my discos and in full flex my tire hits the fender.
now, i sold my quick discos and i installed JKS FLEX CONNECT SWAY KIT. Jeep JK Flex Connect Disconnecting Link System
i dont remove anymore my new JKS FLEX discos but my flex (with the softer spring,blue) i believe is 20%-25% smaller than the full free sway bar.
the good new is dont rubbing and the bad i lost little more flex..
my questions are:
1. need bump stops when i dont rubbing my fenders?
2. if i remove the JKS FLEX for bigger flex..i will need bump stops...ok, i know it!
but if install bumps perhaps lost again my full flex?? ..So it will not make sense to do it!
can you tell me please your opinion?
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Old 08-10-2017, 12:31 PM
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Originally Posted by casual_style View Post
i have a question about bump stops.
my JK have 4'' lift and 35'' tires without bump stop! but i dont know if come the time to install bumps!
before, i removed my discos and in full flex my tire hits the fender.
now, i sold my quick discos and i installed JKS FLEX CONNECT SWAY KIT. Jeep JK Flex Connect Disconnecting Link System
i dont remove anymore my new JKS FLEX discos but my flex (with the softer spring,blue) i believe is 20%-25% smaller than the full free sway bar.
the good new is dont rubbing and the bad i lost little more flex..
my questions are:
1. need bump stops when i dont rubbing my fenders?
2. if i remove the JKS FLEX for bigger flex..i will need bump stops...ok, i know it!
but if install bumps perhaps lost again my full flex?? ..So it will not make sense to do it!
can you tell me please your opinion?
So, it sounds like the new Flex Connects are limiting your articulation a bit since nothing else has changed but you're no longer hitting your fender flare. Your bump stops are really there to help 1) from completely stuffing your tire into the fender, and/of 2) from completely compressing your shock. If there is a situation that you stuff that tire completely, you'd want to run a proper amount of bumpstop. If your tire doesn't stuff completely, but you're totally compressing your shock, you'd want to run whatever amount of bump would prevent that......unless you like replacing shocks. Every jeep is going to be a bit different, but those are the two things you want to observe when trying to determine bump stops.


If you are completely happy running the Flex Connects, that eliminates the issue of stuffing your tire (but is obviously limiting flex)....just make sure you're not abusing your shocks at that point.
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Old 08-20-2017, 01:50 PM
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you are right and i was looking at sites for bump stops.
today i checked my JK and i saw on the rear axle,on the right point who i ll install the bump stop, a strong hit.
is this from a full flex? but i can't see anywhere where has bump it
Click image for larger version

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Size:	1.11 MB
ID:	674227Click image for larger version

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Size:	1.18 MB
ID:	674228

with FLEX connect in full flex the compressing of the rear shock is this:
Click image for larger version

Name:	IMG_4161.JPG
Views:	95
Size:	1.30 MB
ID:	674229
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Old 08-20-2017, 02:01 PM
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That particular spot looks to line up with the bolt that runs through the other side of your track bar. I added bumpstops to mine but also notched that portion of the pad- not the correct way to fix the issue, but a fox nonetheless.

Speaking of which......4" and no raised mount in the rear? There's potential to tear that stock bracket from the axle. You will gain a better roll center and notice better cornering characteristics by raising it.
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Old 08-25-2017, 08:12 PM
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Originally Posted by casual_style View Post
you are right and i was looking at sites for bump stops. today i checked my JK and i saw on the rear axle,on the right point who i ll install the bump stop, a strong hit. is this from a full flex? but i can't see anywhere where has bump it <img src="https://www.jk-forum.com/forums/attachment.php?attachmentid=674227"/><img src="https://www.jk-forum.com/forums/attachment.php?attachmentid=674228"/> with FLEX connect in full flex the compressing of the rear shock is this: <img src="https://www.jk-forum.com/forums/attachment.php?attachmentid=674229"/>
That's nothing really compared to my bump stop pad. I ran no bumps after installing a 3.5" MC lift for one desert trip, and I bent my pad all the way to the axle tube. I hit a set of whoops at about 50 mph and we took a pounding inside the cab. Got home and realized I bent my pad. Stuck a crowbar between the pad and the axle tube and bent it back straight. Installed 2" bump stops and it hasn't happened again.
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