Increase the clearance and performance of your 4-Door Jeep Wrangler JL with a 3.5" lift J-Kontrol suspension system. It delivers exceptional stability on and off road. A step up from JKS J-Venture systems, J-Kontrol is a true bolt-on system that adds in front control arm correction brackets to the J-Venture Kit's long list of upgrade components including JSPEC dual-rate coil springs, custom-valved JSPEC steel monotube gas shocks, an adjustable front track bar and rear track bar bracket (to correct axle positioning under vehicle), Quicker-Disconnect sway bar end links, front/rear Bump Stop Extensions and front Control Arm Correction Brackets to flatten upper/lower control arm angles.

The supplied control arm brackets work with your Jeep's stock control arms to correct caster and improve handling. J-Kontrol offers enhanced performance for daily driving, beach cruising, or regular trail use.

Features & Benefits

Front/Rear Dual Rate Coil Springs (HD) designed to great ride quality across any terrain.
Front/Rear Gas Shocks (Fox 2.5 Elite Series) specifically valved for this suspension system for improved performance on and off-road.
Front Adjustable Track Bar and Rear Track Bar Bracket to correct axle positioning under vehicle.
Front Sway Bar Quicker Disconnects and Rear Sway Bar Links for increased offroad articulation.
Front/Rear Bump Stop Extensions to properly limit suspension up travel.
Front Control Arm Correction Brackets to flatten upper/lower control arm angles to correct caster and improve handling.

Tire Specs

Rubicon Models (all kits)                           

Tire: 37x12.50 
Wheel: 17x9, 18x9, 20x9
Backspacing: 5"

Non-Rubicon Models (all kits)                 

Tire: 35x12.50
Wheel:17x9, 18x9, 20x9
Backspacing:   5"
 

Other tire/wheel sizes can be used, however may require additional modification.

Important Notes

Factory wheels cannot be reinstalled without wheel spacers
HD front springs recommended for applications with aftermarket winch/bumper combo
HD rear springs recommended for applications with rear mounted full size spare tire
Will not fit 4xe models
Will not fit Rubicon 392 models
Shock extension brackets can be used on Rubicon models with stock FOX 2.5 shocks, however this will limit suspension down travel slightly.