Hey everyone, im interested in stretching the wheelbase on my two door. Im wondering if theres a need to run a rear track bar if triangulated control arms are used.

 

A guy in my off road club has a Rancho rear reverse triangulated without a track bar. His drives smooth, handles well, but doesn't flex at all. My 3.5" RK out does his by leaps and bounds.

 

I suggest you spend some time doing some research on the subject of suspension before proceeding. There is a lot more to this than "do I need a track-bar" and honestly, I wonder why you need this in light of that?

Personally, I'd want a basic understanding or more of the pros and cons before making major modifications.

That being said, triangulation will negate the requirement for a panhard bar.


Done correctly, you'll flex fine. Done incorrectly.... well, I'd stay far and away from common suggestions on this website as many of the big name systems are poorly designed, understand the limits and characteristics of these big box mistakes and you may just decide on another option... your local fabricator.

 

My guess is if you are asking a question like that then you are most likely going to be a bit over your head with making such a dramatic change in suspension design (although maybe you plan on having a fabricator do this for you). There will be ALOT of fab work and changes, especially if you dramatically increase the wheel base.

One "kit" you could consider if you are not ready for fabricating your own suspension is the Rock Krawler long arm stretch kit for the two door. Cant remember exactly how much it stretches the wheel base, but I think it is around 99". It does not use a triangulated 4 link design, but instead a 3 link with the panhard bar. Supposedly flexes very well, but I have no first hand experience with it nor any opinion about it.

 

Bingo.

Done right, triangulating a set, or all 4 links is "usually" the best way to go, but at the cost of space, which in some rigs and at some ride heights is a huge factor. That is one of the biggest reason's suspension like that does not come from the factory, and is not offered in common "kits".

 

If you use single triangulated you will not need pan hard. I run triangulated on upper and parallel lower works great and was real easy to do. Flexes like crazy. If really worried run a wishbone upper with single mount on top of axle. It works very well to.

 

Im sure both would work for his "flex" expectations...Honestly any of the mentioned set ups will flex to the capacity "most" people are looking for. Also on a single triangulated you need to be careful of rear steer. Wishbones are ok and work fine from what ive experienced, but I feel if your doing it, go double triangulated. Theres really nothing wrong with a panhard bar though either though. As jkred said double triangulated can be a challenge sometimes as you have to move a few things around. All