ICON K53403 1.25-3" Stage 3 Billet UCA Rear Track Bar for 2025-2026 4Runner 4WD

Vehicle Fitment

• 2025-2026 Toyota 4Runner (4WD, All Non-AVS Trims, All Engines) - 1.25-3" front lift, 0.75" rear lift

Fitment Notes

• 4WD models ONLY - does not fit 2WD 4Runner
• Does NOT fit models equipped with Adaptive Variable Suspension (AVS)
• Front lift range of 1.25-3" is height-adjustable via the threaded coilover body - lift heights based on a stock-equipped vehicle
• Rear lift of 0.75" provided by included dual-rate rear coil springs - achieves a level front-to-rear stance
• Billet Delta Joint Pro UCAs are included - provide on-vehicle caster and camber adjustment for precise alignment at the taller lift heights
• Included ICON Billet Adjustable Rear Track Bar (#54202) re-centers the rear axle at lifted height - adjustable on-vehicle without removal or disassembly
• Front differential drop kit (#55160) and polyurethane differential mounting bushings are included to maximize front suspension travel and prevent CV bind
• For Tubular UCA version see K53403T; for Stage 2 (no rear track bar) see K53402 (Billet) or K53402T (Tubular)
• Recommended aftermarket tires: 33" x 11.50" - larger tires may fit with fender trimming
• Requires recalibration of Advanced Driver Assistance Systems (ADAS) after installation
• Shocks are fully serviceable and rebuildable

Features

• Stage 3 upgrade over Stage 2: adds ICON Billet Adjustable Rear Track Bar - CNC machined 6061 aluminum with FK rod ends and double adjuster threading for on-vehicle rear axle re-centering without disassembly
• Billet aluminum Delta Joint Pro UCAs (CNC machined 6061 aluminum) provide on-vehicle caster and camber adjustment, corrected front-end geometry, and improved suspension component clearance
• ICON patented Delta Joint Pro (U.S. Pat. 10,731,700) - 90 degrees of total articulation, serviceable, rebuildable, greaseable, eliminates suspension bind
• Vehicle-specific 2.5 Series internal reservoir front coilovers with 1.25-3" height-adjustable front lift and increased piston area over stock
• Front differential drop kit and specifically designed coilover lengths maximize available front wheel travel and prevent CV axle bind
• Polyurethane differential mounting bushings replace soft OE units to limit differential movement under load
• Dual-rate rear coil springs - softer ride height rate for compliance, firmer overload rate for bottoming resistance; 0.75" rear lift achieves level stance
• 2.0 Aluminum Series internal reservoir rear shocks with vehicle-specific valving balance front-to-rear suspension performance
• 100% bolt-on system - no drilling, cutting, or welding required

Specifications

• Front Lift Range: 1.25-3" - height-adjustable threaded coilover body, stock-equipped vehicle
• Rear Lift: 0.75" - dual-rate coil springs, stock-equipped vehicle
• Front Coilover: ICON 58692 - 2.5 VS Internal Reservoir (vehicle-specific for 2025-2026 4Runner 4WD)
• Front Coilover Shaft: 7/8" CAD-Plated
• Upper Control Arms: ICON 58552DJ - Billet 6061 Aluminum, Delta Joint Pro, Matte Anodized
• UCA Adjustment: On-Vehicle Caster and Camber via Machined Adjuster Sleeves
• UCA Joint: ICON Delta Joint Pro (U.S. Pat. 10,731,700) - 90° articulation, greaseable, rebuildable
• Rear Track Bar: ICON 54202 - Billet Adjustable Rear Track Bar (6061 aluminum, FK rod ends, double adjuster)
• Rear Track Bar Adjustment: On-Vehicle, No Disassembly Required
• Front Accessories: Diff Drop Kit (#55160), Polyurethane Differential Mounting Bushings
• Rear Springs: ICON 52753 - 0.75" Dual-Rate Rear Coil Spring Kit
• Rear Shocks: 2.0 VS Aluminum Series Internal Reservoir (vehicle-specific)
• Rear Shock Shaft: 5/8"
• Recommended Aftermarket Tires: 33" x 11.50"
• Country of Origin: United States

Included Components

• 1x ICON 58692 - 2.5 VS IR Front Coilover Kit (pair)
• 1x ICON 58552DJ - Billet Aluminum Delta Joint Pro UCA Kit
• 1x ICON 55160 - Front Differential Drop Kit
• Polyurethane Differential Mounting Bushings
• 1x ICON 52753 - 0.75" Dual-Rate Rear Coil Spring Kit
• 1x ICON 54202 - Billet Adjustable Rear Track Bar
• 2x 2.0 VS Aluminum Series Rear Shocks (internal reservoir)
• All required mounting hardware

Product Description

The ICON K53403 is the Stage 3 Billet UCA suspension system for the 2025-2026 Toyota 4Runner (4WD, non-AVS). Building on Stage 2's billet UCA foundation, Stage 3 adds the ICON Billet Adjustable Rear Track Bar - a CNC machined 6061 aluminum track bar with FK rod ends and double adjuster threading that allows on-vehicle re-centering of the rear axle at the taller lift height without removal or disassembly. This is a meaningful addition for lifted 4Runners, as the track bar corrects the lateral axle displacement that occurs when the suspension is raised, improving rear suspension geometry, ride quality, and on-road handling precision.

The rest of the system carries over from Stage 2: billet aluminum Delta Joint Pro UCAs with on-vehicle caster and camber adjustment, 2.5 Series IR front coilovers, front diff drop kit, polyurethane diff bushings, 0.75" dual-rate rear coil springs for a level front-to-rear stance, and 2.0 Aluminum Series rear shocks with vehicle-specific valving. For the Tubular UCA version of Stage 3, see K53403T. For owners wanting to step up to remote reservoir front and rear shocks (and lower rear links), see Stage 4. Note: does not fit 4Runner models with AVS; ADAS recalibration required; all shocks are 100% rebuildable and re-tunable.