Rear Coil Springs JL 4 dr. Diesel engine 392 4Xe 3.5 Inch Lift Pair RockJock 4X4

RockJock 4x4 SKU: HWSH_RJ-144401-101


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This pair of RockJock rear coil springs will provide 3 1/2 inches of lift in JL Wrangler Unlimited applications that feature the 392 Hemi or the diesel engine. These springs directly replace factory springs and are designed to work with RockJock Johnny Joint suspension systems or other manufacturer's lift kits and provide improved ride quality and height control.

Finish is gloss black powder coat. Extensive research was done by RockJock to develop the perfect spring rate and quality of the coil springs. The results: they provide the best in comfortable ride and excellent performance off-road.

Kit Fits:

  • Jeep Wrangler JL Unlimited (4-door) - Diesel and 392 Engines
  • Jeep Wrangler JL (2-door) - Diesel and 392 Engines

Kit Includes:

  • (2) 3.5 in. Rear Coil Springs

Components Specs:

  • Spring Free Length = 17.460 in.


  • For use in all models of Jeep JL Wrangler only, not for use in Jeep JT Gladiators.
  • Intended for use in all Diesel and 392 Hemi powered vehicles.
  • Actual lift amount will vary due to factory produced vehicle variances as well as weight of added on aftermarket equipment.
  • You can expect around a 3.5 in. lift in Sport and Sahara models. Rubicon models, expect about 2 in. more lift over the stock Rubicon springs.
  • Springs are finished in gloss black powder coat.