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Old 02-24-2012, 04:03 PM   #1
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Bump Stop or Not?

I plan on going with the RK 2.5 stock mod with Bilstein 5100's and 35x12.50x15 GY Kevlars. (Wish they made the Duratracs in a 35 for 15") Do I need a bump stop and if so what size? Thanks for all your patience

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Old 02-24-2012, 04:22 PM   #2
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You will need new bump stops. I have no idea what size...

They aren't included in the RK kit?

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Old 02-24-2012, 04:25 PM   #3
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You will need new bump stops. I have no idea what size...

They aren't included in the RK kit?

Nope, on the website it tells you to choose the bump stop lengths after the wheel/tire combo is chosen.
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Old 02-24-2012, 04:34 PM   #4
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Nope, on the website it tells you to choose the bump stop lengths after the wheel/tire combo is chosen.
Huh. Mine came with my lift. In fact, I'm not even sure what size I've got...and I installed em. I'd have to put a tape measure on em.

Lemme go to the RK site and look at your lift...
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Old 02-24-2012, 04:53 PM   #5
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Okay, I see what they're doing. They don't wanna limit your travel by including bump stops with the kit, since you may run tires up to 37" and may or may not have flat fenders, etc. Seems odd to me, though, since most kits I'm aware of include them.

What you're gonna have to do is, when you decide on a tire/wheel combo, talk to someone at RK and figure out what size bump stops will work best for your setup. I'd stick with bottoms front and rear (there are tops, too) if you can.

Based simply on the Bilstein 5100's and your choice of a 35" tire I'm gonna say you want around 2" of bump stop front and rear.

I'm not sure if RK sells their own (I THINK they sell stackable aluminum ones), or whether you'll have to get them somewhere else, like TeraFlex, for example.
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Old 02-24-2012, 05:02 PM   #6
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By the way, the reason I recommend the lower bump stops, as opposed to the uppers, is simply ease of installation.

And RK does make their own...go here, click on Wrangler, then 2007+, then JK Build Components-Upgrades. They'll be @ top of the page.

Again, I think 2" will work fine with the Bilsteins and the 35's...but ask somebody @ RK, just to be sure, before you spend the $$.

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Old 02-24-2012, 05:06 PM   #7
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By the way, the reason I recommend the lower bump stops, as opposed to the uppers, is simply ease of installation.

And RK does make their own...go here, click on Wrangler, then 2007+, then JK Build Components-Upgrades. They'll be @ top of the page.

Again, I think 2" will work fine with the Bilsteins and the 35's...but ask somebody @ RK, just to be sure, before you spend the $$.

Rock Krawler Suspension, Inc.
KB thanks for going out of your way to help, much appreciated.
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Old 02-24-2012, 05:16 PM   #8
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KB thanks for going out of your way to help, much appreciated.
NP

Here's a couple of threads I dug up that seem to indicate the 2" bump stops would be the way to go. But the posts wander a little. No surprise there.

bump stop question... - JeepForum.com


Bump stop dilemma... - JKowners.com : Jeep Wrangler JK Forum

Good luck!

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