JKS JSPEC137PES J-Kontrol 2.5in Lift FOX 2.5 Elite STD 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
• Retains factory OE control arms - control arm correction brackets are included to correct caster geometry
• Standard rate coil springs included - HD rate springs available separately for vehicles with winch bumper, roof rack, or full-size spare
• 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 performance
• External reservoirs on FOX 2.5 shocks provide increased oil and nitrogen capacity for fade-free operation on extended off-road runs
• Front and rear dual-rate coil springs tuned specifically for JL 4-door applications for consistent ride quality on any terrain
• Front control arm correction brackets flatten upper/lower control arm angles to closely mimic factory geometry and correct caster
• Front adjustable track bar corrects axle positioning under lift for straight, true 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: 2.5 inches
• System: J-Kontrol (geometry-correcting, OE control arm retained)
• Shock: FOX 2.5 Performance Elite Series with DSC (Remote Reservoir)
• Spring Type: Dual-Rate Coil Springs (Standard Rate)
• Control Arm Type: OE control arms retained with correction brackets
• 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 Dual-rate coil springs (standard rate, 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 JSPEC137PES is the J-Kontrol 2.5" 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. Unlike the J-Konnect system, J-Kontrol retains the factory OE control arms and instead includes front control arm correction brackets that flatten the upper and lower arm angles to closely replicate factory geometry - correcting caster and improving on-road handling without the cost of replacing the factory arms. Combined with dual-rate coil springs, an adjustable front track bar, and a rear track bar bracket, the system delivers correct suspension geometry at the 2.5" lift height.

The FOX 2.5 Performance Elite shocks with external remote reservoirs (front) and piggyback reservoirs (rear) provide expanded oil and nitrogen capacity for fade-free performance on technical terrain, with DSC adjusters allowing easy tuning of compression damping on the fly. Front sway bar Quicker Disconnects and rear sway bar links improve articulation on the trail, while bump stop extensions protect against overtravel. J-Kontrol is designed for the daily driver and weekend trail user who wants meaningful suspension improvement, proper geometry correction, and premium shock performance without a full control arm replacement.