JKS JSPEC142PES J-Kontrol 3.5in Lift FOX 2.5 Elite HD Coils 2018-2024 JL 4Dr

Vehicle Fitment

• 2018-2024 Jeep Wrangler Unlimited JL (4-Door, 4WD, Gas Models)

Fitment Notes

• 4-Door (Unlimited) models only - does not fit 2-door JL Wrangler
• Does not fit Wrangler JL 4xe (plug-in hybrid) or Rubicon 392 variants - see diesel/392-specific kits
• Shock extension brackets can be used on Rubicon models equipped with stock FOX 2.5 shocks, but will limit suspension down travel slightly
• Retains factory OE control arms - front control arm correction brackets are included to correct caster geometry
• HD rate coil springs included - designed for vehicles equipped with winch bumper, roof rack, full-size spare, or other heavy accessories
• Factory wheels cannot be reinstalled without wheel spacers after lift installation
• Professional installation strongly recommended

Features

• FOX 2.5 Performance Elite Series shocks with DSC (Dual Speed Compression) adjusters - independently tune high-speed and low-speed compression damping for on- and off-road conditions
• External reservoirs on FOX 2.5 shocks provide increased oil and nitrogen capacity for fade-free performance on extended or aggressive off-road runs
• Front and rear HD dual-rate coil springs tuned specifically for JL 4-door applications with added load capacity for accessorized builds
• Front control arm correction brackets flatten upper/lower control arm angles to closely replicate factory geometry and correct caster
• Front adjustable track bar corrects axle positioning under lift for proper steering geometry
• Rear track bar bracket maintains axle centering under the rear lift
• Front sway bar Quicker Disconnects and rear sway bar links improve off-road suspension articulation
• Front and rear bump stop extensions limit suspension up-travel to prevent component contact

Specifications

• Lift Height: 3.5 inches
• System: J-Kontrol (geometry-correcting, OE control arm retained)
• Shock: FOX 2.5 Performance Elite Series with DSC (Remote/Piggyback Reservoir)
• Spring Type: HD Dual-Rate Coil Springs (front and rear)
• Control Arm Type: OE control arms retained with correction brackets included
• Compatible Tire Size: Up to 35" (non-Rubicon) or 37" (Rubicon) without additional modification

Included Components

• 2x FOX 2.5 Performance Elite front shocks with DSC and remote reservoir
• 2x FOX 2.5 Performance Elite rear shocks with DSC and piggyback reservoir
• 4x HD dual-rate coil springs (front and rear)
• 1x Front adjustable track bar
• 1x Rear track bar bracket
• 2x Front control arm correction brackets
• 2x Front sway bar Quicker Disconnects
• 2x Rear sway bar links
• 1x Front and rear bump stop extension kit
• 1x Complete hardware kit

Product Description

The JKS JSPEC142PES is the J-Kontrol 3.5" suspension lift system for the 2018-2024 Jeep Wrangler Unlimited JL (4-door), equipped with FOX 2.5 Performance Elite Series shocks featuring Dual Speed Compression (DSC) adjusters and HD dual-rate coil springs. The J-Kontrol system retains the factory OE control arms and corrects suspension geometry through included front control arm correction brackets, which flatten the upper and lower arm angles to more closely mimic factory geometry and restore proper caster - delivering strong on-road handling at the 3.5" lift height without the cost of full control arm replacement.

The HD coil springs make this the right choice for accessorized builds carrying winch bumpers, roof racks, or rear-mounted full-size spares. The FOX 2.5 Performance Elite shocks feature external remote reservoirs (front) and piggyback reservoirs (rear) for expanded oil and nitrogen capacity, maintaining consistent damping performance during extended off-road use. DSC adjusters allow easy tuning of compression damping to match terrain and driving style. A front adjustable track bar, rear track bar bracket, sway bar Quicker Disconnects, and bump stop extensions round out the complete geometry correction package at the 3.5" lift height.