Back

Back Sign In

SET YOUR VEHICLE

Suspension

Set Your Vehicle

Browse By Category

Product images

Product Media

Suspension
Components
Control Arms >JKS J-Flex Adjustable Rear Upper Control Arms - JL

JKS J-Flex Adjustable Rear Upper Control Arms

JL

Read 2 Reviews | Q&A

Part # 1666

$334.95

Quantity

Ships from Mfg. Available to ship: 1-2 business days

Qualifies for
free shipping!

Set your vehicle to confirm fitment

You will earn Reward Points with this Purchase.

Authorized
Dealer

Product Resources

Installation Instructions

Customer Reviews (2)

Fitment Details

Features & Product Details

JKS Manufacturing adds to its lineup of suspension upgrades for the 2018-2020 Jeep Wrangler JL with new J-Flex rear adjustable upper control arms. These rear J-Flex UCAs join the rest of the J-Flex to allow you to fully upgrade all 8 control arms for a significant improvement to the stock JL control arms both in strength and performance. The arms are constructed from 1.5” OD x .120" DOM tubing and feature robotically welded ends to ensure precision welds and strength. At the axle mounted end OE-durometer premium quality Clevite rubber bushings are preinstalled for great durability, quiet operation and better isolation of road noise and vibrations. At the other end a forged flex joint is threaded in allowing plenty of adjustability for use with with a wide range of lift heights. The forged flex joints use a 1.25”-12 threaded shank along with a jam nut to lock down the length while allowing 30-degrees of misalignment for impressi

The adjustable design allows for correctly position the rear axle while correcting pinion angle at a wide range of heights from stock height up to 4.5” of lift and are a direct bolt-in with all Jspec suspension systems for the Jeep JL. These arms come fully assembled right out of the box finished in a gloss black powder coat. Get more out of your Jeep JL with JKS.

High strength 1.5" x .120" wall DOM construction.

Adjustable design utilizes a forged flex joint and jam nut.

Specially formed for proper tire, frame, and axle clearance.

Axle mount uses OE-style rubber bushing to isolate NVHs.

Adjustable for use with 0-6" lifts.

Fully assembled, ready to install right out of the box.

Product Resources

Installation Instructions

Customer Reviews (2)

Fitment Details

Specifications

Brand: JKS

Adjustable: Yes

Bracket Included: No

Bushing Material: Rubber

Color: Black

Location: Rear Upper

Qty: 2

Required Lift: 0-6.00in

Mfgr. Warranty: Lmited Lifetime

Condition: New Product

Return Policy:

Standard

PEOPLE WHO VIEWED THIS ITEM ALSO VIEWED

REVIEWS & CUSTOMER MEDIA

2 Reviews

3.5 out of 5 Stars

5 Stars

(1)

4 Stars

(0)

3 Stars

(0)

2 Stars

(1)

1 Stars

(0)

Customer Photos and Videos

No user media. You can upload a photo or video of your install by posting a review.

Disappointed 4 months ago

2out of 5stars

Maverick909
Bought these just under a year ago (end of Feb 2024). Waited a couple months (may 2024) put in just over 2000 miles or less on them and the upper frame side joint is shot.

Was this review helpful?

JKS J-Flex Rear Upper Control Arms 2 years ago

5out of 5stars

Joshua2415
When I initially lifted my Jeep I only installed the J-Flex adjustable front lower control arms. Yesterday I completed the install by adding the J-Flex front uppers, plus rear uppers and lowers. I have not been offroad yet but the ride quality is noticeably improved with the full package of J-Flex control arms installed. The Jeep tracks perfectly, is more stable in corners, and feels firmer without getting uncomfortable. I assume these arms just eliminated some sag because when i took it down off the jacks post-install it sits almost an inch higher. All of my suspension mods so far, (JKS lift kit and control arms, Fox shocks, and Falcon steering stabilizer), are from Northridge and I am very pleased with everything.

Was this review helpful?