SKU: 987-24-025
Fox 2.5 Performance Series Rear Shock for 2020-2025 Chevrolet Silverado 2500 HD & 3500 HD, GMC Sierra 2500 HD & 3500 HD – 6.5″ Lift
Improve the rear suspension on your lifted heavy-duty GM truck with the Fox 987-24-025 2.5 Performance Series HTO Shock. Engineered for 2020-2025 Chevrolet Silverado 2500 HD and 3500 HD models, as well as GMC Sierra 2500 HD and 3500 HD, this bolt-on shock integrates position-sensitive valving and a larger piston design to deliver consistent damping and responsive handling across varied terrains. Drivers notice immediate improvements in ride stability and reduced body roll during highway cruising or off-road trails, particularly when paired with aggressive tires or higher lifts that challenge stock components. Among available rear shocks for these trucks, the 987-24-025 provides adaptable rebound control through its Hydraulic Top Out (HTO) system, which slows shaft speed during compression to minimize jarring impacts making it the direct match for trucks pushed beyond factory limits.
Vehicle Fitment Details
This shock fits the rear position on vehicles with a 6.5-inch lift height and all drive types (2WD, 4WD). Compatible models include:
|
Year Range |
Make |
Model |
Position |
Lift Height |
Drive Type |
|
2020-2025 |
Chevrolet |
Silverado 2500 HD |
Rear |
6.5″ |
All |
|
2020-2025 |
Chevrolet |
Silverado 3500 HD |
Rear |
6.5″ |
All |
|
2020-2025 |
GMC |
Sierra 2500 HD |
Rear |
6.5″ |
All |
|
2020-2025 |
GMC |
Sierra 3500 HD |
Rear |
6.5″ |
All |
Confirm your exact setup matches these parameters for seamless installation.
What’s Included in the Purchase
- One (1) Fox 2.5 Performance Series Rear Shock (Part Number: 987-24-025)
- Mounting Hardware: Eyelet top and bottom mounts for direct bolt-on fit (no additional brackets required)
- Product Documentation: Includes setup guide and warranty information (full owner’s manual available for download from manufacturer)
No additional tools or modifications needed for standard installation on compatible vehicles.
Key Specifications and Features
- Shock Body: 2.5-inch impact-extruded 6061-T6 aluminum construction with Type II clear-anodized plating for heat dissipation and corrosion resistance
- Damping System: High-flow, velocity-sensitive damping with vehicle-specific valving for balanced performance on pavement and dirt
- Shaft: 5/8-inch hard chrome-plated steel for durability and smooth operation
- Internal Design: Internal Floating Piston (IFP) separates oil from nitrogen for fade-free damping HTO piston adds secondary rebound control to handle high-speed impacts
- Performance Tuning: Position-sensitive technology adjusts to driving conditions, enhancing traction and comfort under load or during aggressive maneuvers
These elements combine to offer damping capacity that handles the weight and dynamics of HD trucks better than basic replacements, ensuring longer-lasting components and fewer adjustments over time.
Physical Dimensions and Shipping Information
- Extended Length: 31.03 inches
- Compressed Length: 19.84 inches
- Travel/Stroke: 11.19 inches
- Mount Types: Eyelet (top) / Eyelet (bottom)
- Part Weight: Approximately 7 pounds
- Shipping Box Dimensions: 26 inches (length) x 3 inches (width) x 3 inches (height) compact packaging for easy transport
For trucks demanding reliable suspension that keeps pace with daily hauls and weekend adventures, the Fox 987-24-025 sets the standard in rear shock performance for lifted Silverado and Sierra HD models. Add it to your cart today to transform your ride.





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