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1998 Jeep Cherokee XJ Sport 4.0

Suspension

1998 Jeep
Cherokee XJ
Sport

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Suspension
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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

$318.20

msrp: $334.95

318 entries318 entries - 2025 Northridge4x4 Jeep Giveaway

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1998 Jeep Cherokee XJ Sport

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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

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REVIEWS & CUSTOMER MEDIA

2 Reviews

3.5 out of 5 Stars

5 Stars

(1)

4 Stars

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3 Stars

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2 Stars

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1 Stars

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Disappointed 6 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.

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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.

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