JKS JSPEC121KFA 2.5in J-Konnect Lift Kit FOX 2018-2025 Jeep Wrangler JL 4-Door

Vehicle Fitment

• 2018-2025 Jeep Wrangler JL Unlimited 4-Door (Sport, Sport S, Sahara, Rubicon, Willys, High Altitude, Freedom), 4WD

Fitment Notes

• Does not fit 2021-2025 Jeep Wrangler JL 4xe models - see JKS 4xe-specific lift kit
• Does not fit Wrangler JL Rubicon 392 models
• 4-Door (Unlimited JL) only - for 2-Door Wrangler JL J-Konnect see JSPEC122KFA
• Factory wheels cannot be reinstalled without wheel spacers after lift
• HD front springs recommended for builds with aftermarket winch and bumper combination
• HD rear springs recommended for builds with rear-mounted full-size spare tire, roof rack, or heavy accessories
• Maximum recommended tire size: 35x12.50 (Sport/Sahara/Willys); 37x12.50 (Rubicon with 5" backspacing wheels)
• HD Rate Coil Spring upgrade available at time of order for added payload capacity

Features

• JSPEC dual-rate front and rear coil springs (standard or HD rate) tuned for the 4-Door JL platform at 2.5" lift
• Custom-valved FOX 2.0 Adventure Series IFP monotube gas shocks matched specifically to this JL J-Konnect 2.5" system
• Front and rear J-Link lower control arms (heavy-duty 2" x .250-wall DOM tubing) add serious strength over factory arms while correcting front caster and rear wheelbase
• OE-style rubber bushings at both J-Link arm ends minimize NVH for a quiet, street-friendly ride
• HD Drag Link Flip Kit with track bar bracket corrects steering angles for factory-like handling at lifted height
• Front and rear track bar support braces reinforce factory track bar mounts for added trail protection
• JKS front adjustable track bar and rear track bar bracket correct axle positioning at lifted ride height
• JKS2033 Quicker Disconnect front sway bar links and rear extended sway bar links for improved articulation and correct operating angle

Specifications

• Lift Height: 2.5 inches
• Platform: Jeep Wrangler JL Unlimited 4-Door
• System Level: J-Konnect (step above J-Venture - adds J-Link lower control arms, drag link flip, and track bar braces)
• Shock Series: FOX 2.0 Adventure Series IFP (custom-valved for this system)
• Control Arm Construction: 2" x .250-wall DOM tubing, fixed length J-Link lower arms
• Spring Type: JSPEC dual-rate coil springs - Standard or HD Rate option
• Max Recommended Tire Size: 35x12.50 (Sport/Sahara/Willys); 37x12.50 (Rubicon)
• Installation Type: Bolt-on, no cutting or drilling
• Warranty: Limited Lifetime (JKS components); FOX Shocks covered by FOX limited warranty
• Made in USA

Included Components

• 2x JSPEC Dual-Rate Front Coil Springs (Standard or HD Rate)
• 2x JSPEC Dual-Rate Rear Coil Springs (Standard or HD Rate)
• 2x FOX 2.0 Adventure Series IFP Front Shocks (custom-valved)
• 2x FOX 2.0 Adventure Series IFP Rear Shocks (custom-valved)
• 2x Front J-Link Lower Control Arms (fixed length, 2" x .250-wall DOM)
• 2x Rear J-Link Lower Control Arms (fixed length, 2" x .250-wall DOM)
• 1x HD Drag Link Flip Kit with Track Bar Bracket
• 1x Front Track Bar Support Brace
• 1x Rear Track Bar Support Brace
• 1x JKS Front Adjustable Track Bar
• 1x Rear Track Bar Bracket
• 1x Pair JKS2033 Quicker Disconnect Front Sway Bar Links
• 1x Pair Rear Extended Sway Bar Links
• 1x Set Front and Rear Bump Stop Extensions
• 1x Installation hardware pack

Product Description

The JKS JSPEC121KFA is a complete 2.5" J-Konnect suspension lift system for the 2018-2025 Jeep Wrangler JL Unlimited 4-Door. J-Konnect builds directly on the proven J-Venture platform by adding front and rear J-Link lower control arms, a HD Drag Link Flip Kit, and front and rear track bar support braces - a meaningful step up in strength, geometry correction, and trail capability over the entry-level J-Venture system. J-Link lower control arms are fabricated from 2" x .250-wall DOM tubing with large factory-style rubber bushings at both ends, providing a dramatic strength upgrade over factory arms while correcting front caster and rear axle wheelbase geometry without sacrificing on-road NVH.

The HD Drag Link Flip Kit corrects steering angles for factory-like handling feel at 2.5" of lift, while front and rear track bar support braces protect the JL's factory track bar mounting points under sustained off-road stress. Custom-valved FOX 2.0 Adventure Series IFP shocks are tuned alongside JSPEC dual-rate coil springs (available in standard or HD rate for heavier builds), and JKS2033 Quicker Disconnect sway bar links unlock up to 30% more front articulation at the trailhead. Does not fit 4xe or Rubicon 392 models.