Here's my version of what Mud said (we both learned this on my Jeep).
I'm unhappy with the new Currie HD trackbar for the following reasons:
While I have OME HD front springs that are an honest 2.5" lift, I also have 1/2" and a 3/4" coil spacers (stacked). So my lift is really a 3.75" actual height lift that is sunk back down 1/2" due to the 75# weight on my front bumper (simulates a light rockcrawler winch + winchplate) so my actual
lift height with the weight is now approx 3.25" lift.
Even with 2.5" lift and 2" bumpstop extension, the new Currie HD trackbar still sucks IMO for the following reasons:
1) It won't clear any aftermarket diff cover, except a Barnett cover that has same clearance on top half of cover as a stock cover. That isn't really a problem because the Barnett is a fantastic cover (with great clearance on top 2/3 of cover and great protection on bottom 1/3).
even with a Barnett (or stock) diff cover, the Currie trackbar doesn't have enough clearance to allow Mud to lengthen my JKS LCAs slightly to move my axle slightly forward of stock like it used to be back in the day.
By back in the day, I mean when I had 2.5" lift, stock UCAs, JKS LCAs lengthened enough to move front axle slightly forward of stock position and give me 7 degree castors with stock UCA, and a stock diff cover. My stock diff cover (same clearance as Barnett) easily cleared the stock trackbar, even with axle move slightly forward.
Now, with a stock diff cover again (installed by Mud, until we get a Barnett cover on there), the Currie trackbar wouldn't clear the stock cover if Mud moved my axle forward like I wanted it. So to get the Currie trackbar to clear the stock diff cover (or a Barnett), Mud had to keep my axle in approx stock location and install JKS UCA and shorten the UCA to shorter than stock to give me 7 degree castor.
i.e. - if I had my stock trackbar (with stock or Barnett diff cover), I could get my 7 degree castor by lengthening the JKS LCA longer than stock LCA, while having the UCA stock length. This would all clear great and drive great. I love having the front axle slightly forward of stock. I know this because this was my setup before I started buying various aftermarket diff covers and trackbars.
I curse the day I bought an aftermarket trackbar. They all suck for lifts under 4". The stock trackbar is THE BEST for lifts under 4" lift But now how can I go back to my stock trackbar when the JKS and Currie Trackbars that I tried both required drilling out my trackbar frame mount hole. Trying aftermarket trackbars has been a disaster! They don't have good clearance (not even the Currie) and installing them ruined my trackbar frame mount for ever using the stock trackbar again.
For up to a 2.5" lift: the stock trackbar in stock mounting locations is THE BEST.
Best clearance, plenty strong, and centers axle plently good enough. For a 2.5" lift, leave your stock trackbar as is!!! It's better than any aftermarket trackbar!!!
That's ^^^ also the case for a 2.75" lift too.
Mud said mine was only 3/8" offcenter with my 2.75" actual lift height and stock trackbar. That's close enough to use stock trackbar mounted to stock mounting points. Even with a true 3" lift, the stock trackbar mounted in stock mounting points would be only axle 1/2" offcenter, and therefore close enough.
(My lift height was 2.75" actual height when I brought it to Mud. He added a 1/2" spacer and it's now 3.25" actual. This after taking into account the 75# weight on my front bumper sinking springs down about 1/2").For a 3.25" to 4" lift: the stock trackbar is still the best, but you will need to move the axle mount end to center the axle. I would NOT recommend moving the frame mount end
because that might cause clearance issues with diff cover, or with steering linkage.
Aftermarket trackbars and aftermarket diff covers are ONLY best for high lifts.
Meaning higher than 4". For a high lift, the Currie HD is the best.
One exception exists. The Barnett diff cover is awesome for any lift height, and also for stock height. I bought a Barnett (non installed yet), and it is very tough on the bottom 1/3" and very high clearance on the upper 2/3".