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Fitment

YearsMakeModelDriveEngine
2018-2023JeepWrangler2WDDiesel
2018-2023JeepWrangler2WDGas
2018-2023JeepWrangler4WDDiesel
2018-2023JeepWrangler4WDGas
2024JeepWrangler2WDGas
2024JeepWrangler4WDGas
2025JeepWrangler2WDDiesel
2025JeepWrangler2WDGas
2025JeepWrangler4WDDiesel
2025JeepWrangler4WDGas

Features

  • 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.

Quick Specs

  • Bushing Material : Rubber
  • Bushings Included : Yes
  • Grease Fitting Included : No
  • Lift Height : 0-5"
  • Part Number : JKS1666

Important Notes

  • Suggested Starting Length - 17.63"
  • Min. Adjusted Length - 17.25"
  • Max Adjusted Length - 19"
  • *See Instructions for further details.
  • ATTN State of California Consumers warning: Cancer and Reproductive Harm

JKS 1666 Adjustable Rear Upper Control Arms

2018-2023 Jeep Wrangler 2WD/4WD Diesel/Gas 2024 Jeep Wrangler 2WD/4WD Gas 2024 Jeep Wrangler 2WD/4WD Diesel/Gas
4.9256198347107 847 5
98.512396694215%
4.9/5 out of 847 Company Reviews. Rating:
JKS 1666 Adjustable Rear Upper Control Arms
267.96In stock
2018-2023 Jeep Wrangler 2WD/4WD Diesel/Gas 2024 Jeep Wrangler 2WD/4WD Gas 2024 Jeep Wrangler 2WD/4WD Diesel/Gas
Regular Price $334.95
Special Price $267.96
Regular Price $334.95
Special Price $267.96
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Product Details

Your Jeep Wrangler JL will benefit from JKS J-Flex adjustable rear upper control arms. They adjust for proper geometry while increasing driving comfort on the road. J-Flex arms are built from heavy duty 2" OD x .250-wall DOM tubing and CNC bent for additional clearance. At the axle mount, J-Flex arms feature premium OE style rubber bushings to absorb noise and reduce vibrations for a comfortable, quiet ride and maintenance-free operation.

At the frame-side mount, J-Flex arms incorporate a unique hex-shaped threaded bung for easy adjustment of the forged flex end and 1-1/4"-12 threads jam nut Flex end design allows for 30-degrees of misalignment (15 in either direction) for impressive articulation and are greaseable to ensure long bushing life. When the time comes, JKS flex ends are rebuildable. As with all JKS control arms, these J-Flex lower control arms come finished in a durable gloss black powder coat finish and are backed by JKS'™s limited lifetime warranty. Sold in pairs.

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Please note the ship times are estimates however we have seen a major improvement in overall supply chain issues in recent weeks.

In-stock 3 In-stock / 6 Sold Ships in 1-3 days

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