3.5" 2018-2026 Jeep Wrangler JL (4 Door) J-Max Lift Kit by JKS

The JKS J-Max suspension system is a no-compromise, performance-driven coilover package engineered for Jeep Wrangler JL owners who demand maximum capability, adjustability, and strength on the trail. Designed around race-proven FOX coilover technology, J-Max delivers exceptional suspension control, increased travel, and precision tuning for aggressive off-road use, while retaining a bolt-on installation centered on factory mounting points.

At each corner, the J-Max system features custom-tuned FOX 2.5 Factory Race Series coilovers with DSC (Dual Speed Compression) adjustment. These coilovers use a larger 2.5-inch-diameter body and dual-rate springs to deliver improved oil capacity, better heat management, and greater tunability across varied terrain. Front coilovers use remote reservoirs with bolt-on mounting brackets, while the rear utilizes piggyback DSC coilovers, providing consistent damping performance and precise compression control for both low-speed crawling and higher-speed off-road driving.

To match the increased suspension capability, all eight control arms—upper and lower, front and rear—are upgraded to adjustable J-Flex or J-Link control arms for significantly improved strength and full suspension geometry tuning. This allows precise adjustment of caster, pinion angle, and wheelbase while maintaining durability under extreme loads. Supporting components include an adjustable front track bar, a rear track bar bracket, a sway bar, Quicker Disconnects, extended stainless steel rear brake lines, and bump stop components designed to safely manage increased suspension travel.

The JKS J-Max system is available in multiple configurations to suit different driving styles and performance goals. Control arm bushing options include factory-style rubber bushings for reduced NVH or Flex Ends for increased articulation and serviceability. Bump stop options include rubber bump stops for road use and light off-road driving, or FOX 2.0 Factory Race Series hydraulic bump stops for added control during full compression in high-impact terrain. Designed for serious off-road performance, the J-Max suspension system elevates Jeep capability to the highest level, and an aftermarket front driveshaft is strongly recommended due to the increased suspension travel.

Features and Benefits:

• JKS J-Max coilover suspension system engineered for maximum off-road performance and tunability
• High-performance bolt-on coilover package built around factory suspension mounting points
• Front FOX 2.5 Factory Race Series remote reservoir DSC coilovers with bolt-on mounting brackets
• Rear FOX 2.5 Factory Race Series piggyback DSC coilovers with bolt-on mounting brackets
• 2.5" coilover bodies with dual-rate springs provide increased oil capacity, heat control, and ride stability
• DSC (Dual Speed Compression) adjustment allows precise tuning for crawling, trail, and high-speed off-road use
• Front and rear adjustable J-Flex or J-Link upper control arms for increased strength and full geometry tuning
• Front and rear adjustable J-Flex or J-Link lower control arms allow precise adjustment of caster, pinion angle, and wheelbase
• Control arm bushing options include factory-style rubber bushings or Flex Ends for increased articulation
• Front adjustable track bar and rear track bar bracket properly recenter axles after lifting
• Front sway bar Quicker Disconnects and rear sway bar links increase off-road articulation
• Extended-length braided stainless steel rear brake lines included
• Bump stop options include rubber bump stops or FOX 2.0 Factory Race Series hydraulic bump stops
• Designed to safely manage increased suspension travel and aggressive off-road impacts
• Aftermarket front driveshaft strongly recommended due to increased suspension travel
• Supports up to 35 x 12.5 tires with proper wheel and backspacing (trimming may be required)