JL40BKXLTD – 4 in. Suspension Lift System With Dual Rate Long Travel Coil Springs and ADX 2.0 Remote Reservoir Shocks

Jeep Wrangler JL 4-Door Non-Rubicon Diesel.
4 in. Suspension System With D/R L/T Coil Springs, Front Track Bar, Rear Track Bar Bracket, Brake Line Brackets, Bump Stop Spacers, Cam Bolts, Sway Bar End Links, and ADX 2.0 Adventure Series Remote Reservoir Aluminum Monotube Shocks.


California Residents
WARNING: Cancer and/or other Reproductive Harm. www.p65warnings.ca.gov

SKU: JL40BKXLTD Category:


Lift Height

4 in.

The biggest determining factors in ride quality and suspension performance are coil springs and shocks. Skyjacker specifically engineered a progressive 2-stage dual rate long travel coil. Spring rate progression is from a 1st Flex Rate to a 2nd Ride Rate.

The 1st Flex Rate stage delivers a comfortable ride with the ability to flex for increased articulation. The flex rate expands during full articulation as the suspension drops (full droop). This keeps the coil springs seated in the upper coil mount/bucket and the tires in contact with the terrain. The 2nd Ride Rate stage only engages after compression past the flex rate.

Engineered to coordinate with the Wrangler’s distinctive suspension handling characteristics, the rear coils are side specific.

Shocks are a key link in-between the chassis and the moving parts of your suspension. Skyjacker’s ADX 2.0 Adventure Series Remote Reservoir Aluminum Monotube Shocks deliver modern technology in the design with an innovative off-road race-inspired full-displaced valving system.

Engineered for higher speed applications, remote reservoir shocks still perform at crawl. The external remote reservoir separates the nitrogen gas from the oil with an Internal Floating Piston (IFP). The majority of the reservoir contains pressurized nitrogen gas. The IFP prevents the gas and oil from mixing or foaming (cavitation).

The replacement Front Adjustable Track Bar includes Skyjacker installed pressed-in HD OEM style rubber bushing and an adjustable 3/4-inch Heavy-Duty Rod End, Jam Nut and Alignment Bushings. A heavy duty Rear Track Bar Upper Mount Bracket is included to center the axle under the vehicle properly.

Front and Rear Bump Stop Spacers bolt onto the axle bump pads and keep the suspension travel safely in check. Front and Rear Extended Length Sway Bar End Links allow full articulation as the suspension drops (full droop). These sway bar end links include Skyjacker installed pressed-in HD OEM style rubber bushings.


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YearMakeModelFitment Info
2020JeepWrangler (JL) - 4-Door Non-Rubicon 4WD DIESEL--
2021JeepWrangler (JL) - 4-Door Non-Rubicon 4WD DIESEL--
2022JeepWrangler (JL) - 4-Door Non-Rubicon 4WD DIESEL--
2023JeepWrangler (JL) - 4-Door Non-Rubicon 4WD DIESEL--


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