That's my original question
4dr 4 inch is like 6 inch on 2 dr

 

4" coils then with SpeedBumps will help you out. I would replace all the stock control arms or consider a long arm kit.

 

Look, go with Rock Krawler 5.5'', you can clear between 37'' and 40'' very easy. My friend have 40'' with 5.5'' long arm, and i just can tell you the ride is amazing and the flex is crazy, good luck!

 

I insist you purchase everything Teraflex says...not. If your doing 37s look at the OME HD springs or the OME +40 springs. No need to buy new controls arms since you stated you already have a full set. You might want to check into adjustable trackbars extended brake lines and coast driveshafts. You might possibly need spring correction wedges as well.

 

I have all the control arms except front uppers yet! And when you say 4 inch is that for 2dr or 4 inch unlimited ?
Does the SpeedBumps transition fast enough fir rock crawling or will there be a little dely with them.
I assumed they were for high speed applications mostly which is fine for me, I occasionally rock crawl.
I ask this question because it is brought up a lot with other people interested in purchasing them but wonder if it affects rock crawling.
Last question is I recently removed my rear coil stock perch and put in Adjustable ones so I can angle them forward. Can I still install the recommended 4 inch setup with speed bumps or shoud I go with another route?

 

I have adj rear perches already and Adj track bars.
My main concern is that I want to know if just the 4 inch spring setup is good or will I wish to purchased the 4 inch for unlimited.

 

OK so then add a set of front uppers so your not maxing out the lowers adjustment. The 4" coils for a 2dr. will lift the front 5.25", run the 4dr coils and you will get almost 5". The SpeedBumps work great for rock crawling or for high speed. They work great at preventing a hard bottoming out when your loaded or coming of a ledge. You can still use the 4" coil with that setup along with the SpeedBumps. You are planning on new driveshafts also? You will also need some other items to match those coils: swaybar links, trackbars, bumpstops, brakelines, etc.

 

I really want to utilize what I have since I purchased the control arms, going with a long arm really don't make sense to me at this point. I understand the ride quality and ability to flex is way better but I'd like to use what I have, just getting "tuned in" for now

 

You will want a stiffer coil rate such as the OME HD or the OME +40 I'm sure David (think that's his name) can fill you in more about the carrying capacity of each of these springs. The benefit of going this route is that you don't gain extra lift height you get a stiffer coil which will handle the weight better.

 

My current spring I think is comparable to OME hd's I'm running 3 inch 2dr Teraflex/ 2.5 unlimited coils.