RockJock is famous for our coil springs! The John Currie secret recipe is renowned for being the best on-road ride and the most off-road flex, all in one spring!
Some of the secret (but not all!) to our dual rate springs is a soft initial rate that absorbs small bumps and trail chop, to deliver a smooth, comfortable ride, while a firmer secondary rate helps soak up larger impacts and reduce bottoming.
A key differentiator of RockJock spec. dual-rate springs is the positioning of the crossover point between the initial and secondary spring rates so that a portion of the softer initial rate is available and active at ride height before crossing over to the firmer secondary rate deeper into the travel.
Lift height varies per vehicle due to factory variances and amount of added on aftermarket equipment. In 3.6L V6 and 2.0T Sport and Sahara vehicles you can expect around a 4 in. lift, and in Rubicons about 2.5 in. more lift over the stock Rubicon springs.

Kit Fits:

• JL Wrangler Unlimited (4-door) – All 3.6L V6/2.0T Models
• JL Wrangler (2-door) – All 3.6L V6/2.0T Models

Kit Includes:

• Left Rear Coil Spring
• Right Rear Coil Spring

Lift Amount Specs.:
(again, exact lift amounts will vary, as outlined above)

• JL Wrangler Unlimited (4-door, 3.6L) – springs will provide a 4 in. lift
• JL Wrangler (2-door, 3.6L) – springs will provide a 4 in. lift

Components Specs.:

• Left Spring Loaded Height  =  12.812 in.  (however, this number is rather arbitrary due to variances in vehicle load, or lack thereof)
• Left Spring Free Length  =  19.100 in.
• Right Spring Loaded Height  =  13.312 in.  (however, this number is rather arbitrary due to variances in vehicle load, or lack thereof)
• Right Spring Free Length  =  20.000 in.
• Spring Rate  =  dual rate w/ an initial rate of 145 lbs. and a secondary rate of 160 lbs.

Notes:

• For use in all 3.6L V6 and 2.0T models of JL Wrangler and Unlimited only, not for use in JT Gladiators.
• 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 4 in. lift in Sport and Sahara models. Rubicon models, expect about 2.5 in. more lift over the stock Rubicon springs.
• Springs are left hand and right hand side specific (as noted on the springs).
• Springs are finished in gloss black powder coat.

Parts List:

• Rear Left Coil Spring:  CE-9818RSL
• Rear Right Coil Spring:  CE-9818RSR