ICON V.S. 2.5 Aluminum Rear Shock Absorbers for 2025-2026 Toyota 4Runner 0-3" Lift

The ICON V.S. 2.5 Aluminum Series rear shock absorbers are vehicle-specific dampers built for the 2025–2026 Toyota 4Runner, calibrated for 0–3 inches of rear lift over a stock-equipped vehicle and sold as a matched pair. Each shock features a remote reservoir, ICON's Compression Damping Control Valve (CDCV), and a 2.5-inch one-piece hard-anodized aluminum body tuned in both length and damping specifically for this application.

Shipping: ICON parts ship direct from ICON Vehicle Dynamics, mostly by UPS Ground. Lead times vary by part and some items are built to order, so please allow extra time. We email tracking as soon as your order ships.

Tuned Compression Control at Every Speed

The CDCV provides 10 external compression damping settings, letting a driver dial the suspension for pavement commuting, slow technical crawling, or high-speed desert running without swapping components. Controlling fluid flow under compression at the valve rather than relying on a fixed tune means the shock can be adjusted as conditions or loads change, a meaningful advantage when the same truck sees varied terrain week to week.

Internal Bump Zone for High-Velocity Control

A 6061-billet aluminum manifold positioned below the top cap creates what ICON calls an internal Bump Zone. When the shock approaches full compression at high velocity, this zone adds 20% more damping force, resisting harsh bottom-outs without stiffening the mid-stroke ride. For 4Runner owners running faster off-road (washboard forest roads, desert two-tracks), this is the mechanism that keeps the rear end composed rather than bucking.

Rebuildable Construction Built to Last

The nitrogen-charged monotube body is machined from impact-extruded, hard-anodized 6061 aluminum for corrosion resistance and dimensional consistency. The 7/8-inch induction-hardened, chrome-plated shock shaft runs inside a rubber dust boot, and PTFE-lined spherical bearings handle the mounting points. Premium 5-weight shock oil maintains consistent damping across a wide temperature range. The shocks are fully rebuildable and re-tunable, so a worn seal or a desired revalve does not require replacing the entire unit, extending the usable life well beyond a single service interval.

Features

• CDCV with 10 compression settings: external adjuster controls fluid flow under compression for street, crawl, or high-speed desert tuning
• Internal Bump Zone: 6061-billet aluminum manifold adds 20% damping force near full compression to resist harsh bottom-outs
• Remote reservoir: separates gas charge from oil to improve heat dissipation and reduce fade during sustained off-road use
• Hard-anodized aluminum body: one-piece impact-extruded cylinder with consistent corrosion-resistant finish
• 7/8" chrome-plated shaft: induction-hardened with rubber dust boot included for shaft protection
• Fully rebuildable and re-tunable: serviceable construction with PTFE-lined spherical bearings and application-specific mounting hardware

Specifications

Who This Is For and Isn't

These shocks suit 2025–2026 Toyota 4Runner owners running 0–3 inches of rear lift over stock who want externally adjustable, rebuildable dampers capable of handling both daily driving and demanding off-road use.

These shocks are not compatible with 4Runner trims equipped with Adaptive Variable Suspension (AVS). They are not front shocks and do not include springs. Lift heights are based on a stock-equipped vehicle; non-stock lift configurations are not covered by this fitment.

Common Questions

What vehicles do these shocks fit?

These ICON V.S. 2.5 Aluminum Series rear shocks are fitment-specific to the 2025 and 2026 Toyota 4Runner. They are calibrated for 0–3 inches of rear lift over a stock-equipped vehicle. They are not compatible with 4Runner trims that have the factory Adaptive Variable Suspension (AVS) system.

How many shocks are included?

This listing includes two rear shock absorbers, a matched pair, both configured with the same vehicle-specific length and damping tune for the 2025–2026 Toyota 4Runner.

What does the CDCV do and how is it adjusted?

The Compression Damping Control Valve (CDCV) regulates fluid flow under compression and is adjusted externally with 10 distinct settings. Turning the adjuster lets the driver move between a softer street tune and a firmer high-speed off-road tune without removing the shock or disassembling anything.

What is the Bump Zone and why does it matter?

The internal Bump Zone is created by a 6061-billet aluminum manifold below the shock's top cap. As the shock nears full compression during high-velocity impacts, the Bump Zone increases damping force by 20%, reducing the severity of bottom-outs without affecting mid-stroke compliance during normal driving.

Can these shocks be rebuilt or revalved?

Yes. The ICON V.S. 2.5 Aluminum Series shocks are fully rebuildable and re-tunable. Seals can be replaced and valving can be changed without replacing the shock body, which extends the usable life of the unit beyond a single service interval.

WARNING: This product contains chemicals known to the State of California to cause cancer, birth anomalies, or other reproductive harm.