J-Max pulls out all of the stops to offer a truly performance driven suspension package. At each corner are custom tuned FOX 2.5 factory race series coilovers with DSC adjustment. These coilovers offer race proven technology with a larger 2.5” diameter body, dual rate springs and (DSC) dual speed compression adjustment for maximum tunability. Each of the 8 control arms, upper and lowers, front and rear are upgraded to J-Flex adjustable control arm for improved strength, offroad performance and adjustability. In addition, these kits feature high strength bolt-on coilover mounting brackets, an adjustable front track bar, sway bar quicker disconnects and more offer take your Jeeps trail performance and strength to the next level. It should be noted that an aftermarket front driveshaft is strongly recommended due to additional travel capable.
- Front FOX 2.5 Remote DSC Coilovers w/ Bolt-On Brackets for improved performance, strength and tunability.
- Rear FOX 2.5 Piggyback DSC Coilovers w/ Bolt-On Brackets for improved performance, strength and tunability.
- 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 off road articulation.
- Extended Length Braided Stainless Steel Rear Brake Lines.
- Front and Rear J-Flex Upper Control Arms to add strength and adjustability.
- Front and Rear J-Flex Lower Control Arms to add strength and adjustability.
- Front and Rear Bump Stop Extensions to properly limit suspension up travel.
Rubicon Models (all kits)
37x12.50 17x9, 18x9, 20x9 5" BS
Non-Rubicon Models (all kits)
35x12.50 17x9, 18x9, 20x9 5" BS
Other tire/wheel sizes can be used, however may require additional modification
- Factory wheels cannot be reinstalled without wheel spacers
- Aftermarket wheels with 3.5” backspacing is required for clearance
- Requires cutting/removal of factory frame mount brackets
- Front aftermarket driveshaft strongly recommended due to additional travel capability
- Removal of coilover preload required on 2Dr models to achieve a minimum 3.5” of lift
- Will NOT fit 4xe models
- Will NOT fit Rubicon 392 models
- Will NOT fit diesel models
- Fits Rubicon Models Only
In the box for JSPEC129KFC:
- JSPEC1313 (x1) 2018+ JL 3.5in J-Max Box Kit
- JKS1616 (x1) Jeep JL Front Upper J-Flex Control Arms
- JKS1625 (x1) Jeep JL Front Lower J-Flex Control Arms
- JKS1666 (x1) Jeep JL Rear Upper J-Flex Control Arms
- JKS1661 (x1) Jeep JL Rear Lower J-Flex Control Arms
- JKS2511 (x1) Jeep JL Front Coil-over Mount Box Kit
- JKS2512(x1) Jeep JL Front Coil-over Bump Kit
- JKS2518 (x1) Jeep JL Rear Coil-over Mount Box Kit
- FOX88406252 (x1) 18-ON Jeep Wrangler JL Front Coilover, 2.5 Series, R/R, 3.5" Lift, DSC
- FOX88406253 (x1) 18-ON Jeep Wrangler JL Rear Coilover, 2.5 Series, P/B, 3.5" Lift, DSC
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.
