FOX 987-24-058 2.5 Performance Series IFP Rear Shock 2025-2026 4Runner GX550

Vehicle Fitment

• 2025-2026 Toyota 4Runner (All Trims, 2WD/4WD), Rear, 0-2" lift
• 2024-2026 Lexus GX 550 (All Trims, 2WD/4WD), Rear, 0-2" lift

Fitment Notes

• Rear position only - sold as a single shock; order two for a complete rear pair
• Compatible with all drivetrain configurations (2WD/4WD) for both supported platforms
• Standard tune - application-specific valving calibrated for stock to lightly loaded builds; the HD-tuned variant (987-24-059) is available for heavier accessory loads
• Bolt-on direct replacement using OEM rear shock mounting points - no drilling or modifications required
• Stem top mount and eyelet bottom mount - matches OEM mounting configuration on these platforms
• Pairs with FOX 987-02-015 (standard) or 987-02-016 (HD) front coilover for a complete 2.5 Performance Series front-to-rear system
• Alignment recommended after installation

Features

• FOX 2.5 Performance Series IFP (Internal Floating Piston) monotube smooth body rear shock - IFP design permanently separates shock oil from high-pressure nitrogen gas, eliminating aeration and delivering consistent, fade-resistant damping across all terrain types
• Larger 2.5-inch body over a standard 2.0 rear shock delivers greater internal oil volume and superior heat dissipation for extended performance under hard use
• Application-specific standard valving precision-engineered by FOX for the 6th Gen 4Runner and GX 550 rear suspension geometry, optimizing on-road comfort and off-road control for stock to moderately equipped builds
• 2.5-inch smooth bore zinc-plated seamless steel body for long-lasting durability and corrosion resistance
• 7/8-inch hard chrome-plated heat-treated alloy steel shaft for superior strength and resistance to wear and bending
• Black-anodized CNC-machined 6061-T6 billet aluminum components throughout
• High-flow velocity-sensitive damping piston for precise, progressive response on- and off-road
• Type II anodized aluminum body construction for efficient heat dissipation and corrosion resistance
• 100% serviceable and re-valvable for long-term ownership and tunability

Specifications

• Part Number: 987-24-058
• Series: FOX 2.5 Performance Series (Standard Tune)
• Design: IFP (Internal Floating Piston) Smooth Body Monotube
• Body Diameter: 2.5 inches
• Body Material: Smooth Bore Zinc-Plated Seamless Steel
• Shaft: 7/8-inch hard chrome-plated heat-treated alloy steel
• Reservoir: Internal IFP (no external reservoir)
• Extended Length: 25.88 in.
• Collapsed Length: 16.45 in.
• Travel: 9.43 in.
• Top Mount: Stem Top
• Bottom Mount: Eyelet
• Lift Range: 0-2 inches
• Position: Rear
• Drivetrain: 2WD and 4WD
• Quantity: 1 shock per unit

Included Components

• 1x FOX 2.5 Performance Series IFP Smooth Body Rear Shock
• 1x Hardware kit (washers, bushings, and nuts)

Product Description

The FOX 987-24-058 is a 2.5 Performance Series smooth body IFP rear shock engineered specifically for the 2025-2026 Toyota 4Runner and 2024-2026 Lexus GX 550, both built on the TNGA-F platform and sharing common rear suspension geometry. Stepping up from a standard 2.0 rear shock, the 2.5-inch body provides meaningfully more internal oil volume and heat capacity - critical for maintaining consistent damping during extended off-road use or repeated hard compressions. The IFP monotube design permanently separates oil and nitrogen, preventing the aeration and damping fade that degrade conventional twin-tube shocks under hard use.

This is the standard tune variant, with valving calibrated for stock to lightly modified builds running up to 2 inches of rear lift. The 9.43 inches of travel, 25.88-inch extended length, and 16.45-inch collapsed length are sized precisely for the rear suspension envelope of these platforms, with stem top and eyelet bottom mounts that bolt directly to the OEM mounting points without modification. For builds carrying significant added weight at the rear - tire carriers, drawer systems, rooftop tents - the HD-tuned 987-24-059 offers heavier valving. The 987-24-058 pairs naturally with the FOX 987-02-015 or 987-02-016 front coilover for a complete, balanced 2.5 Performance Series suspension upgrade on these Toyota and Lexus platforms.