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Fox 2.0 IFP 0-3.5″ Front and Rear Lift Shocks for 2011-2019 Chevy Silverado 2500HD 2WD/4WD
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Fox 2.0 IFP 0-3.5″ Front and Rear Lift Shocks for 2011-2019 Chevy Silverado 2500HD 2WD/4WD
Fox 2.0 IFP 0-3.5 inches Front and Rear Lift Shocks for 2011-2019 Chevy Silverado 2500HD 2WD/4WD
Part Number: 2X985-24-189_2X980-24-664
Summary: The FOX Performance Series 2.0 IFP smooth body shock kit is engineered to transform the performance of your Chevy Silverado 2500HD. Utilizing an Internal Floating Piston (IFP) design, these shocks provide a comfortable on-road ride and predictable off-road handling even in tough conditions. The aluminum body construction increases cooling capacity and resists rust, ensuring consistent damping performance across various environments.
Features
- Internal Floating Piston (IFP): Mono-tube design separates shock oil from the high-pressure, nitrogen-charged gas chamber to provide maximum performance from factory-tuned valving by eliminating oil aeration.
- Aluminum Body: 2.0” Impact extruded and CNC machined 6061-T6 clear anodized aluminum provides increased cooling capacity to ensure resistance to rust over time.
- High-Flow Piston: Race-developed piston design provides application-specific valving to ensure a predictable ride quality capable of handling rough road conditions.
- Redundant Sealing Pack: Main seal, wiper seal, and scraper seal system provides a robust barrier to ensure long-term durability in harsh environments.
- Advanced Suspension Fluid: JM92 oil provides improved performance at variable temperatures to ensure consistent damping response.
Technical Specifications
| Specification | Value |
|---|---|
| Series | Performance Series |
| Position | Front and Rear |
| Body Diameter | 2.0 inches |
| Shaft | 5/8 inches hard chrome plated heat-treated alloy steel |
| Extended Length | 20.280 inches (Front) |
| Compressed Length | 13.680 inches (Front) |
| Travel | 6.600 inches (Front) |
| Upper Mount | Bar Pin |
| Lower Mount | Clevis |
| Notes | Fits 0-3.5 inches Lift |
Fitment
- 2011-2019 Chevy Silverado 2500HD 2WD/4WD
- Note: Fits vehicles with 0-3.5 inches of lift.
What’s Included
- Includes 4 Shocks (2 Front and 2 Rear)
- Quiet nitrile rubber bushings
Why Choose This Product?
- Engineering Advantage: The Internal Floating Piston (IFP) technology prevents the mixing of oil and nitrogen, which maintains consistent damping control and prevents performance fade.
- Performance Benefit: Drivers experience a significant improvement in ride predictability and heat management compared to standard shocks, resulting in increased confidence both on and off-road.
Frequently Asked Questions
What is the benefit of the IFP design?
The Internal Floating Piston (IFP) separates the shock oil from the high-pressure nitrogen gas, which eliminates oil aeration and allows the valving to function with maximum precision.
Are these shocks resistant to rust?
Yes, the bodies are constructed from impact-extruded 6061-T6 clear anodized aluminum, which increases cooling capacity and will not rust over time.
Is this a complete set for my truck?
Yes, this part number includes a full set of four shocks, consisting of two front and two rear shocks specifically valved for the Chevy Silverado 2500HD.









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