I have a 13" JKUR. I am on the fence on whether I am going to run a 3.5" or 2.5" RK or MC lift. I know that I am going to run 35s which-ever lift I go with. I am planning on upgrading the drive-shafts at the time of lift.

My question is; will I still need an exhaust spacer with new shafts? If I will, I want to do this while the bolts are new enough to actually unbolt.

I ave been searching threads but haven't seen this answered exactly. (Honestly I got tired of looking) I know most do the spacer, but every instance I found of this was when they were keeping the stock shafts which I have no intention of doing.

 

No need for both. The driveshaft is the "correct" way to go.

 

I recently purchased the RK 2.5 Flex kit and also bought the exhaust spacers. I would think it's a good idea to relocate your exhaust regardless of the drive shaft replacement, besides its only an extra 40-50 bucks...

Here is a video from rough country -> http://www.youtube.com/watch?v=j4dguNJlVLc there is also a teraflex video on it if you search for it.

Dan

 

Wouldn't a new driveshaft at full droop still contact the exhaust in its stock location?

 

That's what I thought too. And the new shaft is to prevent contact with trans pan at droop. That said if dynatrac say differ they would prob know

 

Thanks for the quick responses.

Its not the $ that concerns me. I don't like the idea of introducing more places for my exhaust to leak if I don't need to.

I think there is some advantage gained by the different in joints. the stock starts its bend very close to the TC. An aftermarket (1310-1350) uses a double joint that pushes the pivot center of the joint toward the front of the Jeep. I just didn't know if it was enough to clear the exhaust. (thus the post)

 

My guess is that depends on how much lift and flex you are going for, longer travel shocks and arms will allow for more droop, but not being familiar enough with the aftermarket shafts you are looking at I'm just guessing that they may still contact the exhaust in the stock location. I'm going with the exhaust spacers to start with as I don't commute my jeep and it should be fine for a few months while I save up for a new drive shaft myself. This probably won't help you, but I plan on taking some measurements pre and post lift, as well as pre and post driveshaft installation to see what the major difference is. worst case scenario is I end up removing my spacers when I install the new driveshaft if there aren't any clearance issues when flexing.

When you get your new DS and lift you should take some pictures and post them up for future reference for others.

Dan

 

You don't need the exhaust spacer with a new aftermarket drive shaft. The exhaust spacers cause problems with some skid plates too. Search on the forum, there is tons of threads on this.

 

I have a 2013 JKUR with a Rock Krawler 3.5 Max Travel lift on it and Adams driveshafts. You don't need exhaust spacers. The aftermarket driveshafts are going to be more narrow than the stock driveshaft and have high angle u joints, you will not need the exhaust spacers.

 

Your set-up is the way I am leaning... (Lift and Shafts) so it doesn't get much better than that for an answer. BTW; if you don'y mind a slight thread redirection, what was your actual lift height with the 3.5? Would you do it again?

Thanks all for your quick replies.