Description
The FOX® 2.5 Performance Series HD Tune Front IFP Coilover Shock (987-02-016) is a bolt-on 2.5″ front coilover with Hydraulic Top Out (HTO) technology, designed for heavy payload applications, providing 0″-2.25″ of front lift on 2025-2026 Toyota 4Runner, 2024-2026 Lexus GX550, and 2024-2026 Toyota Land Cruiser (250 Series).
IMPORTANT: This SKU carries FOX®’s “Designed for Heavy Payload” application note and uses HD Tune valving. A standard-tune version of this same coilover — FOX® part 987-02-015 — covers identical years, vehicles, and lift range without the heavy-payload designation; confirm which tune matches your typical load before ordering. The matching rear shock for these trucks is FOX® part 987-24-058 (0″-2″ rear lift). This front coilover also differs from FOX®’s 2.0″ body Performance Series coilover for the same platform (part 985-02-157), which uses a smaller-diameter shock body — the two series are not interchangeable.
FOX® Performance Series 2.5 shocks for the Land Cruiser 250, GX550, and 4Runner are a bolt-on solution with vehicle-specific valving and larger pistons than the 2.0 Performance Series, improving both on-road and off-road performance. This coilover levels the vehicle without straining ball joints or linkages, maintaining OEM reliability and vehicle behavior.
Hydraulic Top Out (HTO) technology offers usable position-sensitive rebound damping control on and off pavement. HTO reduces harsh top-outs and increases comfort by forcing shock oil through a secondary shim stack to slow shock shaft speed — particularly beneficial after installing heavier, aggressive tires or on applications lifted higher than OEM specification.
The 2.5″ impact-extruded, Type II clear-anodized 6061-T6 aluminum shock body pairs with a 5/8″ hard chrome shaft and an Internal Floating Piston (IFP) for high-flow, velocity-sensitive damping. FOX® backs this shock with a Limited Lifetime Warranty.
- Front-position bolt-on coilover, 0″-2.25″ lift, fits 2025-2026 Toyota 4Runner, 2024-2026 Lexus GX550, and 2024-2026 Toyota Land Cruiser (250 Series) — designed for heavy payload applications
- Hydraulic Top Out (HTO) technology reduces harsh top-outs and improves comfort under heavier tire and lift setups
- 2.5″ impact-extruded, Type II clear-anodized 6061-T6 aluminum shock body — larger diameter than the 2.0 Performance Series
- High-flow, velocity-sensitive damping piston with Internal Floating Piston (IFP) design
- 5/8″ hard chrome shaft for durability under heavy loads
- Backed by FOX®’s Limited Lifetime Warranty
- Sold individually
| Part Number | 987-02-016 |
| Brand | FOX® (Fox Racing Shox) |
| Series | Performance Series 2.5 HD Tune Coilover IFP |
| Position | Front |
| Quantity | Sold individually |
| What’s Included | One (1) FOX® 2.5 Performance Series HD Tune Front Coilover Shock |
| Application | Designed for Heavy Payload |
| Travel | 6.45″ |
| Extended Length | 24.45″ |
| Compressed Length | 18″ |
| Lift Range | 0″-2.25″ |
| Body | 2.5″ impact-extruded 6061-T6 aluminum, Type II clear-anodized |
| Shaft | 5/8″ hard chrome |
| Damping | High-flow, velocity-sensitive with Hydraulic Top Out (HTO) |
| Piston | Internal Floating Piston (IFP) |
| Top Mount | OEM |
| Bottom Mount | Eyelet |
| Warranty | Limited Lifetime Warranty |
This 2.5″ body front coilover with HD Tune and HTO covers 2025-2026 Toyota 4Runner, 2024-2026 Lexus GX550, and 2024-2026 Toyota Land Cruiser (250 Series) at 0″-2.25″ of front lift, and is designated by FOX® for heavy payload applications. Note: for standard-tune valving without the heavy-payload designation, order FOX® part 987-02-015 instead; for the matching rear shock, order FOX® part 987-24-058.