I wanted to add a rear axle trackbar bracket to reinforce and raise my attachment to help center my rear axle after some changes I made to my lift. I have a dynomax rockcrawler exhaust and the tailpipe passes over the rear axle exactly 6.5" above my factory trackbar which is in the factory trackbar bracket. And I have about 6.5" uptravel in my rear suspension before bottomed out on the bumpstops. So as it sits now on full compression my trackbar may just kiss my exhaust, I don't think I can raise the trackbar end even one inch at the axle!


Kind of ticked off, it doesn't look like there is any way to raise the trackbar at the axle with this exhaust. I would love to hear if anyone has any suggestions, I know a lot of lifts including some teraflex and AEV raise the axle end trackbar attachment, so this means this exhaust wouldn't work with those lifts?


The exhaust passes over the trackbar about 8" inwards from its attachment point at the axle. So it looks like raising the trackbar at the axle with any manufacturers bracket will put the trackbar into the exhaust on compression...

 

I guess I should also mention that I have a teraflex 2" drop bracket on the frameside and my axle is offcenter about 1" due to changes I have made outside of the teraflex lift. I wanted to lose the frameside drop bracket and use a 3" axle bracket instead cause I think it will handle better.

 

Is the stock exhaust routed in the same fashion?

 

Nope, can't be. I have 3" extended bumpstops installed now that are just keeping my trackbar off this exhaust when my suspension is compressed. I obviously didn't have these bumpstops when stock, and I never hit when stock.

So stock exhaust has at least 3" more clearance above, or around, the trackbar...

 

Two things:

1. Do you still have your stock bump stops on the frame side installed? I ask because I have a true 4" lift (with extended axle side bump stops) and only have ~4.5" between bump stop extender and bump stop at ride height. Therefore the 6.5" of clearance should be plenty.

2. Unless your stock exhaust went through your floor boards by some manufacturing error (<- sarcasm, read on, I actually worked on a Sunday to try to help your problem ), the RockCrawler design should have better clearance of the axle and track bar than the stock one. I just went outside and flexed mine out in the ditch (granted I should have 1" more suspension than you if your profile is up to date and accurate) and these pics show that I have 5.5" at nearly full flex (I couldn't get the bump stops to touch, they are 5/8" apart) of vertical distance between the track bar and the exhaust. Therefore, if your suspension is truly 3", then you should have roughly 4" of clearance at full flex (5.5"-0.625" for the bumpstop-1" suspension difference=3.875")

5/8" from bumpstop:


Vertical Distance @ (nearly) full flex (angle makes it look weird, I measured it with a tape measure to be ~5.5" straight verticle distance):



With this aside, we have heard of issues with axle side track bar mounting brackets, but as there are so many lifts out there in this world for the JK, we cannot test every one of them. However, we are willing to help in any way we can.

One recommendation that I have is to loosen the muffler inlet/outlet clamps and slide the exhaust as far back as possible. You will come close to hitting your frame "cutout" when you do that, so leave it short of that (roughly 1/2" as shown in the pics below). Have someone hold the exhaust in that position, then re-tighten the clamps. And from my experience with my RockCrawler exhaust, you really need to tighten those clamps TIGHT. I have the LoD rear bumper and my exhaust tip is VERY close to it and will rattle if the system loosens and is allowed to go back to its "gravity based" location.

Don't push it back far enough to contact the frame "cutout":


Closeup of the frame "cutout":


So, as long as the axle side bracket isn't a bulky monstrosity, you should have room for it to clear at full flex and get the handling that you desire*.

*I put this asteric in here because I am not saying you WILL have room or achieve any increase in handling, I am saying you SHOULD have room (handling is unknown). As I stated before, there are too many combinations to try and it wouldn't be cost effective for the company to try them all, and I am not in the business of making promises that I cannot keep. However, as stated before as well, we are willing to try our best to satisfy each and every customer, so let me or "Dynomax" know if there is anything we can do.

Hopefully this helps...

 

Thank you for tor reply, and especially on Sunday. My profile is not up to date, I have new springs and am running about 4" lift. I have axle side extended bumpstops, 3" in height as per manufacturer recommendations for my springs. Here is what I have after taking a quick ride outside...

Stuff on driver side. I can safely stuff a few more inches, but couldn't on this hill which is the biggest hill in my neighborhood...






Bumpstop not touching yet, it can still compress maybe 2 more inches or so...






In this position, not yet fully flexed with about 2" more to go, I have less than 3" until the trackbar hits the exhaust. (The trackbar travels a bit rearward and towards the exhaust as it the axle goes up, so there is actually less than the 3" clearance shown by the tape.)






So where I stand is that the exhaust will only work with stock trackbar bracket on the axle. There just isn't any room to raise it. And I looked at what you said about moving the pipe back, but its currently hanging straight down in the hanger and the tip is 1/2" from hitting my bumper, so no room to move it really. At least not enough to make the 3" additional clearance I would need.

 

Like I stated, we can't test every combination, but at least we are trying here.

I think the only possible solution for you, regardless of manufacturer, is to dump pre-axle (if you want the axle side relocation bracket) like wayalife did. Or...custom bent tailpipe post axle.

 

Im in the same boat. i have a rockkrawler kit and they raise the rear tbar bracket and with the way their tbar bends there is only about 3 inches of clearance between the two after i rolled the tbar in towards the middle of the truck. im either going to oval out the pipe to gain a little more room or let the truck do it for me This is what happens when you start using parts to work with different manufacturers..... im not pissed, i pretty much new this was going to happen

 

Thanks, I appreciate your time and efforts. With all due respect, please undersand that from what I see your exhaust wouldn't work with any axle side trackbar brackets, so there is no need to "test combinations". I have stock trackbar and bracket.

If someone had no lift and no extended bumpstop (stock set up) then your exhaust looks like it would touch the trackbar on full stock suspension compression. (I say this because I have a 3" bumpstop extension and get less than 1" clearance if I fully compress into my bumpstop extensions, so no bumpstop extension equals no clearance on compression).

 

No offense or anything taken, don't you worry.

And to clarify, yes the system works perfectly fine on stock vehicles without any issue with the trackbar.

Forgot to add...sorry I couldn't help.