JKS Jeep JK Wrangler Adjustable Rear Spring Mounts

Until recently, correcting rear spring mount alignment on vehicles equipped with a CV driveshaft has been a difficult challenge for JK owners. Fortunately, JKS Manufacturing now offers a solution to this problem that is both simple and affordable. Adjustable Spring Mounts install directly in place of the factory lower coil mounts on the rear axle housing. The folded, heavy-gauge steel brackets form extremely strong mounting pads that are easily adjusted to match the angle of the upper spring mounts. As a result, the coil springs are able to function as originally intended and interference with the rear track bar is eliminated.

Premium grade 1/2″ U-bolts allow easy spring mount adjustment and installation without the need for any welding. In addition, the U-bolts feature rolled threads (20 per inch) for exceptional clamping strength and grade 5 locking nuts for extra security. Anti-corrosive coatings protect all parts and hardware from rust and deterioration.

Adjustable Spring Mounts are pre-drilled to accept JKS Coil Spring Retainers, an optional accessory that prevents the rear coil springs from becoming unseated. The product is also compatible with our latest Rear Trackbar Brace, which now features special U-bolt slots intended specifically to accommodate Adjustable Spring Mounts on both LHD and RHD applications.

For more information about the products that JKS Manufacturing makes, please visit their website at: www.jksmfg.com


  1. When even a modest spring lift is installed, e.g., OME 617 on the rear axle, which yields about 2.5″ of lift, there has been considerable discussion on the benefits of adding an adjustable rear track bar, such as the JKS bar. There has also been a fair amount of discussion on the utility of adjustable upper control arms to correct the rear pinon angle. On my 2008 2-door Rubicon, I’ve made all of these modifications. However, by correcting the rear pinon angle for even this modest lift, I’ve noticed considerable interference between the passenger rear spring and the track bar. In my opinion, this appears to be a rather major issue and hence the need for these adjustable spring mounts; however, I’ve seen only rather limited discussion of this problem in the relevant JK forums. I’m curious if this is as major a problem as it appears to be, and would appreciate additional thoughts and feedback. Many Thanks.

  2. if you have not installed a new aftermarket rear drive shaft, you do not need to correct your rear pinion angle. with 2.5″ of lift, you should be fine with the stock drive shaft even on a 2-door and that is why there isn’t much discussion about the problem you are seeing.

Leave a Reply

Your email address will not be published.