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4.5" Lift Kit | J-Konnect | Wrangler JL 4-Door

Brand: JKS Manufacturing
SKU: JSPEC217FRS
Kit Component List

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$8,449.65
Subtotal: $8,449.65

I have read the Important Notes and Verified my Vehicle Fitment

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4.5" Lift Kit | J-Konnect | Wrangler JL 4-Door

$8,449.65

4.5" Lift Kit | J-Konnect | Wrangler JL 4-Door

$8,449.65
Shock Option: FOX 3.0 Factory Race Series
Spring Rate and Control Arm Bushing Option: Standard Rate Coils & Rubber Bushings
Steering Correction Option: I Already Own A Drag Link Flip Kit

Upgrade your Jeep Wrangler JL with the JKS J-Konnect 4.5” Suspension Lift Kit, engineered to deliver serious off-road performance without sacrificing on-road comfort. This complete system provides enough lift to clear up to 37” tires, giving your JL a more aggressive stance and increased ground clearance. At the heart of the kit are heavy-duty fixed-length lower J-Flex control arms with factory-style rubber bushings or JKS Joints. These arms are designed to improve axle geometry and enhance overall durability. JKS's Dual-rate coil springs, specifically tuned for the JL platform, ensure a smooth ride on the pavement while allowing maximum flex on the trail.

To keep your suspension properly aligned and functioning, the kit includes front and rear track bar brackets, extended sway bar links, bump stop extensions, and brake line relocation brackets. Everything is engineered for bolt-on installation and long-term reliability. Whether you're hitting hardcore trails or commuting daily, the J-Konnect system delivers the perfect balance of control, comfort, and clearance. Compatible with both 2-door and 4-door JL models, and upgrade-ready for those looking to fine-tune their build further, this kit is the ideal foundation for any serious Jeep Wrangler build. Choose JKS for proven performance, trusted quality, and trail-tested design that takes your Jeep to the next level.

Features & Benefits

  • Features heavy-duty J-Link lower control arms to improve strength and correct geometry.
  • Front adjustable track bar and rear track bar bracket.
  • JKS Control arm correction brackets.
  • Front sway bar quicker disconnects.
  • Front and rear bump stop extensions.

Recommended Tires & Wheels

  • 37 x 12.5 with 17 x 8 and 5 in. Backspace
  • 40 x 13.5 with 17 x 8 and 4.5 in. Backspace

(Trimming may be required)

Read our Shock Buyers Guide HERE

Picking the Right Coil Springs

JKS J-Rated Suspension Systems feature custom wound, progressive rate coil springs. That means the spring rate increases as the spring is compressed. You and your Jeep enjoy a plush ride during low load driving scenarios such as highway cruising with increased performance as each spring compresses. If you carry a significant amount of extra gear in your Jeep, some J-Rated suspension systems are available with optional high-rate coil springs to support the additional weight.

Control Arm Bushing Selection

Flex Ends:

Forged flex end and 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. Completely rebuildable and serviceable on the trail with our JKS Flex Joint tools (link to tool).

Rubber bushings:

Engineered specifically to reduce NVH characteristics (Noise, vibration, harshness), these factory style maintenance-free rubber bushings come pre-installed at both ends and will ensure a quiet, controlled ride with hassle-free operation in any environment.

  1. Aftermarket drive shaft is required.
  2. Drag link flip is required for steering correction. Additional heavy duty steering components are reccomended.
  3. It is recommended to use a strong steering stabilizers. In our testing there a lot of variation between jeeps and how they react to Tire size, Lift heights, Factory steering components, Worn parts. Increasing Caster and adjusting the tow in on the tires can help, but sometimes a strong stabilize is required to prevent steering wheel shimmy in some vehicles.
  4. Select HD spring option for aftermarket bumpers and or winch.

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