Description
FOX 987-24-015 is a 2.5 Performance Series Smooth Body rear shock with an internal floating piston (IFP) and Hydraulic Top Out (HTO) valving, engineered for 2018-2026 Jeep Wrangler JL models running 3.5 to 4 inches of lift.
IMPORTANT: This listing is for the REAR shock only, valved specifically for a 3.5″-4″ lift height. Do not confuse this part with FOX 987-24-013, which is the rear shock valved for a 2″-3″ lift height on the same platform; installing the wrong lift-height valving will result in incorrect ride characteristics. This shock is sold individually; order two for a complete rear axle installation. For the front axle at this same 3.5″-4″ lift height, the matching shock is FOX 987-24-014, sold separately.
FOX 2.5 Performance Series shocks deliver the benefits of a larger 2.5-inch shock body without the added complexity of a piggyback reservoir or external compression adjusters. The 2.5-inch impact-extruded 6061-T6 aluminum shock body is finished with type II clear anodizing to dissipate heat and resist corrosion, while a 5/8″ hard chrome shaft rides through vehicle-specific, position-sensitive valving and a larger piston for improved on-road comfort and off-road control.
Hydraulic Top Out (HTO) technology adds usable, position-sensitive rebound damping control near the top of the shock’s travel. As the shock approaches full extension, HTO routes oil through a secondary shim stack to slow shaft speed, softening harsh top-outs. This is especially beneficial on vehicles running heavier, more aggressive tires or lifted above OEM ride height, where unloaded suspension travel increases, as is the case with this taller 3.5″-4″ lift valving.
An internal floating piston (IFP) separates the shock oil from the high-pressure nitrogen charge inside the shock body, keeping damping consistent and preventing oil aeration under hard use. FOX backs this shock with a Limited Lifetime Warranty against defects in materials and workmanship.
- Rear position, 2.5 Performance Series Smooth Body IFP shock with HTO valving for 2018-2026 Jeep Wrangler JL, valved for 3.5″-4″ lift applications
- 2.5″ impact-extruded 6061-T6 aluminum shock body with type II clear anodized plating
- 5/8″ hard chrome shaft for durability and smooth seal engagement
- High-flow, velocity-sensitive damping tuned specifically for this platform and lift height
- Internal floating piston (IFP) separates shock oil from the nitrogen charge for consistent damping
- Hydraulic Top Out (HTO) piston reduces harsh top-outs and improves control after lifting or adding heavier tires
- Eyelet top mount and eyelet bottom mount
- Backed by a FOX Limited Lifetime Warranty
- Sold individually
| Part Number | 987-24-015 |
| Brand | FOX |
| Series | 2.5 Performance Series |
| Body Style | Smooth Body |
| Position | Rear |
| Valved For | 3.5″-4″ Lift |
| Shock Body Diameter | 2.5″ |
| Shock Body Material | 6061-T6 Aluminum, Impact Extruded |
| Body Plating | Type II Clear Anodized |
| Shaft Diameter | 5/8″ Hard Chrome |
| Internal Floating Piston (IFP) | Yes |
| Hydraulic Top Out (HTO) | Yes |
| Travel | 11.19 in |
| Extended Length | 30.72 in |
| Compressed Length | 19.54 in |
| Top Mount | Eyelet |
| Bottom Mount | Eyelet |
| Warranty | FOX Limited Lifetime Warranty |
| What’s Included | (1) FOX 2.5 Performance Series Rear Shock, Part Number 987-24-015 |
This shock fits 2018-2026 Jeep Wrangler JL models running 3.5″-4″ of lift and is valved specifically for that lift range on the rear axle. This is the rear shock only, valved for 3.5″-4″ lift; it is not interchangeable with FOX 987-24-013, which is valved for a 2″-3″ lift on the same rear position. The matching front shock at this lift height is FOX 987-24-014. Confirm your vehicle’s current or planned lift height before ordering to ensure correct damping performance.