Iron Rock list the bar to work with lifts from 3" up. The OP called Iron Rock, he said "I even called IRO and they told me the bar does not work for 2" lift".
If that does not settle the issue please consider that I have previously posted on this forum that I could not use the IROs track bar that came with my lift because it would hit my differential cover and possibly the top of the differential or cover bolts. So I choose to set it aside and use a JKS track bar. This is not rocket science....If the darn thing would have worked without modification I would have used it. I posted pictures in another thread of the difference in the bends in my IRO bar V/S my OEM bar. If needed I could post the pictures here.
How often the bars hits or miss the differential is not something I would hazard a guess at, but anyone that denies that it CAN hit is flat out wrong. IMO that may be because some folks are to timid to complain to vendors, or they fear the attempted intimidation from IRO that can happen. IF you post documented details of problems you personally have had with IRO parts.
Another possibility I see..... After spending some time on this forum I think the track bar could be rubbing the differential and the owner would not know the difference. Or they might not drive in conditions that flex or compress the suspension enough to expose the problem.
To prove this one way or the other is not easy....Not everything makes it to the internet. Even if it does a Google search, search for something like this can be very difficult. Because even if it is on the internet the thread title may not give a clue and the problem may be casually or briefly mentioned in a thread on another topic.
Despite the difficulties this morning I had some time....In a brief search and without trying a bunch of different combinations of key words I turned up the following post. In some of the threads people with the same lifts said they had the same bar and it wasn't hitting the differential. The mixed results makes me wonder if the bends are inconsistent. I also notice that IRO bars hit the diffs on other Jeep models that have front suspension much like WJs , so I included a few.
Apparently IROs track bar will not even clear the front differential with IRO track bar drop bracket. IRO claims the bracket will work with 4" of lift. This is a good indication the bar will hit with small lift amounts.
Reno4X4... My biggest issue is that my IRO adjustable trackbar hits the front diff cover on compression. IRO says this bracket can only be used with 4" lift or more. I have 4" lift, but need to add a bend to the bar to clear the diff cover. I'll get pics up tomorrow. /snip/
I ended up having to use my stock track bar, and grind on the new IRO drop bracket to clear the crazy bend it has to clear the diff cover. It cleared my diff nicely, but is about 1/4" too short. I am waiting on the 1.25" die for the bender, and then I will be able to add some bend into my IRO adjustable track bar to clear the diff and reinstall it.
http://www.reno4x4.com/forum/showthread.php/9290-Renojeepster-s-04-WJ-Build/page6
JeepForum WJ 2013
I ended up with some measurements I made myself checking my 4" lift and the jeep drives fine. ONLY ONE BIG ISSUE (that also my jeep has) the IRO track bar does not have enough clearance for the diff housing and they collide when suspension up travels.
I have noticed that the IRO trackbar has slight bends than orginal one. Is that me that I can't adjust the lift or is a bad trackbar design problem?
Thanks
Jeep forum.... Same person.....shortening Ca's a bit (replace the uppers with factory one or cutting the IRO ones) would help but not solve the problem. now the diff hits the trackbar even if the jeep hit speed bump at low speed (10-15 mph)
A different person Same thread....Good read. I had the same issues until I added both UCA and LCA. Its been a few years since I did it so I don't remember the lengths but I do get the loud clunk now and again on a really big bump when the truck is loaded down.
Guess I'll have to check the trackbar for marks. Lol where was this thread 2 years ago.
Another forum
Track bar Hitting Front Diff Cover after lift kit ..
Hey guys :wavzing: i'm new here and i have a question for you. I recently installed the Iron-Rock 3 inch lift on my 03 Wj Overland. The problem i seem to be experiencing is the New track bar hitting (rubbing) the front diff. cover when i go through a dip kinda fast (nothing really above normal speeds). I was thinking about jacking up the front end and removing the swar bars, removing the lower control arms, loosening the upper control arms, and resetting the track bar ...i don't eally think it'll do the trick, but i've tried everything else (as far as re-torqueing everything). I have e-mailed Iron Rock Offroad and awaiting a response. One thing i did notice on some of the various sites that sell aftermarket track bars for the Wj with lifts anywhere from 1-6 inches seem to have an additional bend toward the middle of the bar to compensate or prevent any rubbing or contact with the diff. cover. Has anyone else experienced this problem ? /snip/
Good News....I just spoke with Jason from Iron Rock and he told me that they have had only one other situation with the track bar hitting the diff. and they're going to build me a replacement track bar with the extra bend... and they'll send it out to me in about a week... No extra charges what so ever to me!..No hassle... Great customer Service.. I'm happy... Thanks for your input guys, i appreciate it. /snip/
I had a rare issue (according to Iron Rock this has only once with there Lift for the WJ) with the Track bar bumping into the Front Diff. They are sending me a modified replacement. /snip/
A person in the same thread.....Same problem with my ZJ. Bought a adjustable track bar that was suppose to be for a ZJ. Well it lacks the curve to get around the diff cover on a hard bump but fits otherwise. The only answer I have is to remove it and put a bend in it to get around the cover.
IRO track bars on ZJ-XJ
1. I've driven it for a week now and haven't had any death wobble. But I have heard some clunking from the front and I just found this. That clean spot is where it contacts the stock cover. This is with the sway bar connected the whole time. I haven't disconnected the sway bar and flexed it to see how bad it is, but I think there's enough bushing give that it slids past, but I don't like it. I plan to upgrade the cover in the future but it'll only stick out more then. Any ideas on fixing this?
2. I like the basic design and beef of this track bar, but it ain't perfect. Iron Rock should supply a longer axle-side bushing bolt w/ washers with their kit, and I don't know what I'm going to do about the diff cover contact. Maybe most people with more lift bumpstop enough that it doesn't happen, I dunno. Maybe the bushings have enough give that it's OK, or maybe it'll just "self clearance."
3. I have the iron rock track bar it did hit my diff cover when I had 3inches in the front but now I have 6 inches in the front it doesn't even come close, if you look at a stock track bar it has a bow in it to clear the diff. And yes the track bar is put in the correct way. Here is what mine looks like now with the iron rock steering setup. Most other aftermarket track bars stick out further to compensate for the diff.
Jeep Forum Reviews
Pros: Quality
Cons: Can not run on stock height, I installed my lift in portions over 3 days, after the track bar but before the lift coils the track bar hits the diff cover....oh well....
Pros: Beefy... great price...
Cons: With a 2 inch BB lift, the trackbar hits my diff cover on large bumps...