I have a 2010 jk sport, 6 speed, 2 door. I want to install the 3.5 x factor rk mid arm kit.

What drive shaft do i need?

 

You shouldn't need any driveshaft for a while with that set up. With the X Factor you can adjust your pinion angles and help save your factory driveshaft for a while.

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I thought that with a 2 door anytime you go to a 3.5" lift you need drivshafts right away? how long can you run stock shafts for if your just doing light to moderate wheeling?

 

It depends on the year. If you have a 2012 and on then you will need to do a front driveshaft or exhaust spacer. The driveshaft is the better option.

With the earlier JK's and a kit with all 8 arms you will be able to save the driveshafts for a while since you can adjust the pinion angle. Eventually you will need to replace the driveshaft but its not something that needs to be done instantly on a kit with all 8 arms.

If you didn't have all 8 arms then you would not be able to correctly adjust your pinion angle and you will need a driveshaft sooner than later.

 

Do you need all 8 arms to correct caster? Or can i put front lowers and rear lowers to correct this issue

 

i did front lowers and rear uppers, and i believe that is the way to go.

 

Okay sweet. And that fixed caster problem?

 

If you get adjustable yes you can dial them in. As for fixed length i believe they go by lift height, but not sure. Id go adjustable incase you add weight or change lift height down the road youll be prepared

 

To correct the castor issue all you really need are adjustable front lowers. This is the best option. Some people will say to use the drop brackets or cam bolts but the best will be the adjustable arms.

If you do only rear uppers you are still left with the weak factory rear lower arms that can be bent and broken on rocks. If you don't see many rocks then the rear uppers are all that would be needed to adjust pinion angle.

 

Thanks for the help guys, sorry to steal thread. Thought the op might have the same issues