Improve the ground clearance and off-road capability of your 4 Door Jeep Wrangler JL with the JKS J-Kontrol 3.5" suspension system. The J-Kontrol system retains your OE control arms but steps up the rest of your suspension. J-Kontrol kits feature dual rate coil springs, adjustable front track bar, specially valved gas shocks, sway bar Quicker Disconnects, and front control arm correction brackets as well as all other necessary hardware for a complete bolt-on installation. J-Kontrol system's front control arm correction brackets further enhance the on-road handling by flattening out the control arm to more closely mimic factory angles while correcting caster. With a matched combination of parts, J-Kontrol systems offer very solid performance without compromising daily-driver comfort. If you spend a good amount of time on the trails, take control with J-Kontrol.
FOX’s all-new Performance Elite shocks are a game changer for Jeep enthusiasts. PN 883-26-051 2.5” diameter remote reservoir monotube shocks are designed specifically for Wrangler JLs with 3.5-4” Lift - front position. Valving is tuned specifically for JLs with larger than stock aftermarket wheels and tires. Get ready to take your driving experience to a whole new level. External reservoirs provide increased oil and nitrogen capacity for fade-free operation plus hardcore appearance. Dial-in performance to match your personal driving style and Jeep’s specs with FOX Dual Speed Compression (DSC) adjusters. You’ll get improved ride quality and handling on road, with exceptional damping control and reliability off-road. 2.5" impact extruded and CNC machined 6061-T6 aluminum bodies are hard anodized to resist corrosion and weigh less than steel body shocks. End treatments and other components are black-anodized aluminum for striking contrast. Inside, extreme-duty hard-chromed, heat treated 7/8" steel shafts drive race-developed high-flow pistons and proprietary seals. Travel (in): 11.170” | Compressed Length (in): 17.340” | Extended length (in): 28.510” | Top Mount: Eyelet | Bottom Mount: Eyelet | Sold in pairs.
FOX’s all-new Performance Elite shocks are a game changer for Jeep enthusiasts. PN 883-26-055 2.5” diameter remote reservoir monotube shocks are designed specifically for Wrangler JLs with 3.5-4” Lift - rear position. Valving is tuned specifically for JLs with larger than stock aftermarket wheels and tires. Get ready to take your driving experience to a whole new level. External reservoirs provide increased oil and nitrogen capacity for fade-free operation plus hardcore appearance. Dial-in performance to match your personal driving style and Jeep’s specs with FOX Dual Speed Compression (DSC) adjusters. You’ll get improved ride quality and handling on road, with exceptional damping control and reliability off-road. 2.5" impact extruded and CNC machined 6061-T6 aluminum bodies are hard anodized to resist corrosion and weigh less than steel body shocks. End treatments and other components are black-anodized aluminum for striking contrast. Inside, extreme-duty hard-chromed, heat treated 7/8" steel shafts drive race-developed high-flow pistons and proprietary seals. Travel (in): 11.170” | Compressed Length (in): 17.430” | Extended length (in): 28.600” | Top Mount: Eyelet | Bottom Mount: Eyelet | Sold in pairs.
- Front/Rear Dual Rate Coil Springs (standard or 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.
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 modifications.
- 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
In the box for JSPEC142KFP:
- JKS6201 (x1): JL Control Arm Correction Brackets
- JSPEC1310 (x1): JL J-Kontrol Main Box Kit
- JSPEC1352 (x1): JL 3.5in Front Coil Spring Kit - HD
- JSPEC1358 (x1): JL 3.5in Rear Coil Spring Kit - HD
- FOX88326051 (x1): Jeep JL Front, Performance Elite 2.5" Dia., Pair
- FOX88326055 (x1): Jeep JL Rear, Performance Elite 2.5" Dia., Pair
All JKS products are protected by a limited lifetime warranty to ensure they are free from manufacturer defects in material and workmanship so you can go with confidence knowing your JKS parts are covered.
