OME 2.5" lift bump stops?

depends on the shock length. if you got the standard ome shocks the front operates on stock stops 13.5/22.5".
the rear @13.5/22.5 will use 1" extensions. If you also installed a track bar relocation bracket that raised the track bar 2-2.5", that requires a 2" rear bump stop extension because it will hit the tub and chop the fuel pump harness in half if it's hanging out enough, unless you also have a 1" body lift.

If you have the long travel shocks, front 15.5/26.5", 2" minimum bump stop extensions and the springs will unseat almost 3". the rear 14/24" will require 2" bump stop extension in stock mounts. if you have the pinon rotated and use a shock shifter/extension, the bump stop grows to 3".

32" tires generally need a 1" bump stop extension to keep the tire from remodeling the fender.

I’m running the Bilstein 5100 shocks with the OME HD springs. The fronts are 13.06”/21.08” and the rears are 12.81”/20.08”. I’m running a rear track bar relocation bracket and a 1/2” Rokmen body lift.
 
depends on the shock length. if you got the standard ome shocks the front operates on stock stops 13.5/22.5".
the rear @13.5/22.5 will use 1" extensions. If you also installed a track bar relocation bracket that raised the track bar 2-2.5", that requires a 2" rear bump stop extension because it will hit the tub and chop the fuel pump harness in half if it's hanging out enough, unless you also have a 1" body lift.

If you have the long travel shocks, front 15.5/26.5", 2" minimum bump stop extensions and the springs will unseat almost 3". the rear 14/24" will require 2" bump stop extension in stock mounts. if you have the pinon rotated and use a shock shifter/extension, the bump stop grows to 3".

32" tires generally need a 1" bump stop extension to keep the tire from remodeling the fender.

I can confirm this. I posted pics in my build thread a few pages back when I was cutting my lower spring perches so my shocks would clear. At full bump with the TB relocation bracket installed it will gladly chop the fuel pump wire harness and leave you stranded, probably in the most inconvenient spot on the trail. Hoping I can get away with the 0.5" BL with 2" bump stops.
 
  • Like
Reactions: Chris
I’m running the Bilstein 5100 shocks with the OME HD springs. The fronts are 13.06”/21.08” and the rears are 12.81”/20.08”. I’m running a rear track bar relocation bracket and a 1/2” Rokmen body lift.


I would put another set of shocks on it. those can be run with stock springs. the ome front springs are almost 19" unsprung which can run a 24" extended length shock which can be had in the 14-15" collapsed length depending on the shock brand. the rear are 15" and can also run a 24" shock.

if the rear track bar relocation bracket is 2-2.5" taller than the stock bracket, it needs a 2" bump stop extension, which allows you to use a 14" collapsed length shock. that gives you the same flex as a 3.5-4" lift kit out of a box with no loss in up travel due to the components that are required for the tire size and brackets used.
 
  • Like
Reactions: Chris
Having run the OME TB bracket, and now the JKS CV angled bracket, it looks to me like the CV style bracket is taller than the standard bracket. Can @Chris forgo the TB bracket and run an adjustable TB to gain some clearance?
 
  • Like
Reactions: Chris
@Chris, disregard my comments. My setup is totally different than what you are trying to achieve. My guess is that OME supplies the 1" bumpstop extensions for the rear because they expect you will also be installing their TB relocation bracket and will need that bump stop for their bracket to clear the tub. Since you'll have the springs and shocks out during install, you should still check full bump to see what clearance you have.
 
  • Like
Reactions: Chris
Having run the OME TB bracket, and now the JKS CV angled bracket, it looks to me like the CV style bracket is taller than the standard bracket. Can @Chris forgo the TB bracket and run an adjustable TB to gain some clearance?

with the short shocks, yes. but if he goes to a correct length shock for the capabilities of the spring, no. without the bracket, it will cause more axle shift and bind up the joints much harder.
 
I would put another set of shocks on it. those can be run with stock springs. the ome front springs are almost 19" unsprung which can run a 24" extended length shock which can be had in the 14-15" collapsed length depending on the shock brand. the rear are 15" and can also run a 24" shock.

if the rear track bar relocation bracket is 2-2.5" taller than the stock bracket, it needs a 2" bump stop extension, which allows you to use a 14" collapsed length shock. that gives you the same flex as a 3.5-4" lift kit out of a box with no loss in up travel due to the components that are required for the tire size and brackets used.

Okay, based off everything you’re telling me, I’m just going to return the Bilstein shocks and get the matching OME shocks and the OME rear track bar bracket as well. That means it will be a complete OME kit, which take a lot of the guess work out of it. At that point I should be able to clear these 31.7” tires with the stock front bump stops and the rear OME bump stops, right?
 
@Chris, disregard my comments. My setup is totally different than what you are trying to achieve. My guess is that OME supplies the 1" bumpstop extensions for the rear because they expect you will also be installing their TB relocation bracket and will need that bump stop for their bracket to clear the tub. Since you'll have the springs and shocks out during install, you should still check full bump to see what clearance you have.


the ome bracket it is still a 2" height change and will slap the tub without 2" bumpstop extension or the 1" combined with a bodylift.
 
with the short shocks, yes. but if he goes to a correct length shock for the capabilities of the spring, no. without the bracket, it will cause more axle shift and bind up the joints much harder.

Does this mean his shock choice is going to bottom out before the relocation bracket hits the tub? That can't be good.
 
the ome bracket it is still a 2" height change and will slap the tub without 2" bumpstop extension or the 1" combined with a bodylift.

So, is OME assuming you're going to install a 1" BL so that 1" rear bumpstop extensions will work? Trying to wrap my head around the fact that I've been running OME's 2.5" lift for years without checking these things.
 
  • Like
Reactions: Chris
the ome bracket it is still a 2" height change and will slap the tub without 2" bumpstop extension or the 1" combined with a bodylift.

Interesting. So is this actually detailed in the OME instructions for their lift, or are they just expecting you to figure this out the hard way? I’m asking because it seems that if they’re going to include a track bar bracket, they would need to include 2” bump stops.

Do I even need a track bar relocation bracket with this lift?

I just ordered the OME shocks, so that should take care of the shock issue. I’ll just return the Bilstein shocks.
 
@Chris. I haven’t chimed in yet, but personally, I would never run Bilstein 5100’s again. I feel every event, and if you like that, fine, but it’s not for me. I know it’s all personal preference, but I think you’ll be better off with the OME. I can’t wait to get Rancho 5000x in May and sell my Bilstein’s. Literally, I can’t wait. It’s driving me crazy.

And yes, those bump stops with the OME are supposed to go in the rear.
 
  • Like
Reactions: Chris
the ome bracket it is still a 2" height change and will slap the tub without 2" bumpstop extension or the 1" combined with a bodylift.
Why would OME not include what's needed in their kit, and/or sell you a setup that could leave you stranded in the wild? Surely they don't expect everyone who installs their 2.5" lift to figure out that they need a 1" body lift, without anyone telling them that? Doesn't make any sense...
 
  • Like
Reactions: Chris
Interesting. So is this actually detailed in the OME instructions for their lift, or are they just expecting you to figure this out the hard way? I’m asking because it seems that if they’re going to include a track bar bracket, they would need to include 2” bump stops.

Do I even need a track bar relocation bracket with this lift?

I just ordered the OME shocks, so that should take care of the shock issue. I’ll just return the Bilstein shocks.

Knowing what I know now @Chris, this is what I'm trying to wrap my head around. I ran this exact same lift for 5 years, not knowing that the potential for pinching the fuel pump wiring harness could happen. As far as your question about the relocation bracket, I think you need it to maintain the TB's geometry. It needs to have the proper angle to allow the rear end to move the way it was designed to move. At least that is how I understand it. Is this right @David Kishpaugh ?
 
  • Like
Reactions: Chris
Knowing what I know now @Chris, this is what I'm trying to wrap my head around. I ran this exact same lift for 5 years, not knowing that the potential for pinching the fuel pump wiring harness could happen. As far as your question about the relocation bracket, I think you need it to maintain the TB's geometry. It needs to have the proper angle to allow the rear end to move the way it was designed to move. At least that is how I understand it. Is this right @David Kishpaugh ?

Yep, that makes sense about the track bar bracket and maintaining the geometry. But how can they not include the proper length bump stops needed to run said track bar bracket without pinching those fuel lines. That’s what I can’t wrap my head around. Unless I’m missing something here.
 
What if you don't use the relocation bracket? Still needed?
You got me. I run 2” bumpstop in the rear on my 2.5” OME with the relocation bracket.
 
Why not pull your springs and jounces and cycle the suspension to determine your bump stop extension? This takes all of the guess work out of setting up your suspension.

With 33's, OME shocks, ZJ tie rod and MC front track bar I needed 1.375" extension up front to keep the tires out of the steel fenders at full flex. In the rear (with the factory track bar w/ relocation bracket) I needed 1" extension to keep the shocks from over compressing.

Whatever bump stop extensions a kit provides will, at best, only be a conservative guess. Make your own and make them as only as thick as they need to be.

Sent from my SM-G950U using Tapatalk
03e4e2412bd98e70facf827ca509a6c4.jpg
a7faa73d514021e5b57af91432f32685.jpg
 
Last edited: