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.
This specific coil spring set for EcoDiesel drivetrain equipped JT Gladiator vehicles provides 3 1/2 in. of lift. Our springs directly replace the factory coil springs and are designed to work with RockJock Johnny Joint suspension systems or other manufacturer's 3 to 5 in. lift kits.

Kit Fits:

• JT Gladiator – EcoDiesel drivetrain models

Kit Includes:

• (2)  Front Coil Springs
• (2)  Rear Coil Springs

Component Specs:

• Spring Free Length (front)  =  20.000 in.
• Spring Free Length (rear)  =  22.250 in.
• Finish  =  gloss black powder coat

Notes:

• For use in all EcoDiesel models of JT Gladiator.
• Not intended for use in 3.6L V6 drivetrain models of JT Gladiator. Find the springs for that drivetrain option here.
• Intended for use with factory coil spring isolators, front and rear, top and bottom.
• We recommend installing the proper bump stops in conjunction with these springs. See our many front and rear bump stop kit options here.
• Actual lift amount will vary due to factory produced vehicle models and variances as well as weight of added on aftermarket equipment. Coil spacers for fine tuning vehicle height can be found here.

Parts List:

• Front Coil Springs (pair):  RJ-154102-101
• Rear Coil Springs (pair):  RJ-154401-101