yes, its safe to say that over 4inches you need front shafts.

 

https://www.jk-forum.com/forums/jk-write-ups-39/rough-country-jeep-jk-wrangler-4-suspension-lift-installation-write-up-41434/

33

 

thanks guys for all of the great info. glad i posed a helpful question for some other users as well

 

depends if you wheel or not,

Auto and 3" you'll need a new front shaft

 

i was looking at the rough country 4" kit that cost about 1K. The one that comes with the control arms. What is the differnce in these kits? Is one better than the other? I notices the other one comes with a lot more parts as in the track bar relocation brackets and dropped pitman arm

 

with that much lift, you really need adjustable control arms and adjustable track bars, not just a bracket.

 

I still dont understand to be honest, it seems like everyone is saying something differernt.

Some lift kit makers are saying 4'' and below are ok... and that they fully tested this...

some lift kit makers say anything over 3'' is ok, and that 3.1 inches is too much and will need replacing.

some people are saying that if you lift you want to replace it anyway or that you can just lower the skid plates to compensate.

I think the people who are asking (myself included) just want to know what the actual height is.

I would like to do the tera flex 3'' coil lift with shocks, and I dont want to have to replace anything else really... I dont want to have to do the driveshafts at all. now some people say that the 3'' coil lift actually gives you 3.5 or 4'' lift... why would that be the case ?? is TF just under rating there lifts for some reason? or is RC the same and this is how it works, they give you a minimal lift that the kit might give you and everyone experiances different ranges ??

I have a 4 door 2009 rubicon, with an auto.
I do not want to have to replace the driveshafts at all. I don't rockcrawl because there are hardly any rocks on longisland but I also dont want to have my driveshafts rip boots the first time I get to a jamboree or something. I am going for 35's and I would like 2.5-3.5 inch lift.. I will likely add a 1'' body lift but I am not sure about that either... I heard then you have to extend the steering link or something and that just seems really sketch...

I dont mean to highjack this thread form the main question asked, and I hope this is kinda along track with what was they wanted to know... I just feel like sometimes there is soo much knowladge here and its almost like its too much because alot of the time there is a wide range of answers that all seem to be right... hahahah

 

There are a lot of factors to consider. My 3" lift is not enough height to create such a steep angle that my front DS needs replacing (I have a 4-door, auto). However, the new shocks that I used for my lift allow enough droop that the front driveshaft does make contact with my auto tranny skid on the trail when I am flexing. Because of this, I've torn my driveshaft boot off and, eventually, I am going to need to replace the shaft. I attempted to lower the tranny skid with washers, but lowering it 1" did not keep the shaft from making contact with the skid.

My Jeep, as of right now, is totally driveable without the DS boot. But, eventually, the extra wear will cause it to be replaced.

 

i have a 4 door 6-speed.4" of lift and put some small hole in my front boot durning full flex.It would of been fine if i didn't disconnect the sway bar and wheel,but that's not going to happen for me. so i replaced the front driveshaft.
the rear i never had issues with but just replaced it because i was bolting up a new(to me) rear end,one of those-so hell i was under there i might as well replace it.I don'ty think i would of ever had issues with my rear driveshaft if i didn't replace.

 

hey man, im friends with this guy at a local 4wd shop and they do all the lifts and wheels and tires for the jeep dealers around here. i asked him this question specifically and he said that even with my jeep being an auto 2dr a 4'' lift would NOT require new DS. he does them all the time, and i trust him. just thought id let you know what i was told....