Rear adjustable upper control arms?
Thread Starter
JK Newbie
Joined: Dec 2010
Posts: 59
Likes: 0
From: Austin, Tx
Rear adjustable upper control arms?
I plan to lift my 2door 6-speed approximately 3-4inches, and I know I need a rear drive shaft (plan to get a coast), but do I need rear adjustable upper control arms? Or will my pinion angle be fine without them?
JK Freak
Joined: Jun 2011
Posts: 723
Likes: 2
From: Murrieta, CA
Over 2.5" and you will want adjustable front lower and adjustable rear upper control arms. Pinion angle will be steep. Watch your rear springs as they will bow. You need some wedges/shims, adjustable mounts, or you can cut off the factory perches and weld them or other perches in the correct location. I went with RK spring wedges.
i am still running the factory rear shaft, as are many others.
JK-Forum Founder
Joined: Jul 2006
Posts: 36,534
Likes: 16
From: Laguna Niguel, CA
rear uppers are REQUIRED to set your pinion angle after installing a new u-joint style drive shaft.
