
Upgrade your 2001-2019 GM 2500HD/3500HD with the Fox 980-24-659 2.0 Performance Series IFP Shock Absorber, featuring the latest in shock technology to dramatically enhance your truck's performance. These shock absorbers utilize Fox's race-proven damping control for a comfortable on-road ride and reliable off-road handling in even the toughest conditions. The precision metal impact aluminum body improves cooling capacity and ensures rust resistance. Inside, you'll find advanced race-proven performance valving technology. The Fox Internal Floating Piston (IFP) mono-tube design separates the shock oil from the high-pressure nitrogen gas chamber, eliminating oil aeration and maximizing performance with factory-tuned precision valving. The high-flow damping piston, paired with application-specific valving, delivers a predictable ride quality capable of handling the roughest road conditions. Sold individually.
Features:
- Body: 2.0" Metal impacted 6061-T6 Aluminum resists rust
- Body Plating: Clear anodized for a durable finish
- Internal Reservoir: IFP mono-tube design separates shock oil from high-pressure nitrogen
- Components: Black-anodized, CNC-machined 6061-T6 billet aluminum
- Shaft: 5/8" hard chrome plated heat-treated alloy steel
- Piston: Race-developed high-flow piston design
- Valving: Application-specific valving to optimize performance
- Seals: Redundant sealing pack system including main seal, wiper seal, scraper seal
- Oil: JM92 Advanced Suspension Fluid for improved performance at variable temperatures
- Bushings: Quiet nitrile rubber for increased suspension articulation
- Mounting: Direct replacement for stock and aftermarket lift kits
Specifications:
- Extended Length: 29.550"
- Collapsed Length: 18.450"
- Travel: 11.100"
- Top Mount: ES6
- Bottom Mount: ES6
- Applications: 2001-2019 GM 2500HD/3500HD - Rear, Lifted 4"-6"
Note: The lift height is recommended by Fox. Due to various aftermarket suspension systems, it is advised to take measurements for proper application. The image may not represent the exact product. Shock absorbers are sold individually.

Upgrade your 2001-2019 GM 2500HD/3500HD with the Fox 980-24-659 2.0 Performance Series IFP Shock Absorber, featuring the latest in shock technology to dramatically enhance your truck's performance. These shock absorbers utilize Fox's race-proven damping control for a comfortable on-road ride and reliable off-road handling in even the toughest conditions. The precision metal impact aluminum body improves cooling capacity and ensures rust resistance. Inside, you'll find advanced race-proven performance valving technology. The Fox Internal Floating Piston (IFP) mono-tube design separates the shock oil from the high-pressure nitrogen gas chamber, eliminating oil aeration and maximizing performance with factory-tuned precision valving. The high-flow damping piston, paired with application-specific valving, delivers a predictable ride quality capable of handling the roughest road conditions. Sold individually.
Features:
Body: 2.0" Metal impacted 6061-T6 Aluminum resists rust
Body Plating: Clear anodized for a durable finish
Internal Reservoir: IFP mono-tube design separates shock oil from high-pressure nitrogen
Components: Black-anodized, CNC-ma[...]
Upgrade your 2001-2019 GM 2500HD/3500HD with the Fox 980-24-659 2.0 Performance Series IFP Shock Absorber, featuring the latest in shock technology to dramatically enhance your truck's performance. These shock absorbers utilize Fox's race-proven damping control for a comfortable on-road ride and reliable off-road handling in even the toughest conditions. The precision metal impact aluminum body improves cooling capacity and ensures rust resistance. Inside, you'll find advanced race-proven performance valving technology. The Fox Internal Floating Piston (IFP) mono-tube design separates the shock oil from the high-pressure nitrogen gas chamber, eliminating oil aeration and maximizing performance with factory-tuned precision valving. The high-flow damping piston, paired with application-specific valving, delivers a predictable ride quality capable of handling the roughest road conditions. Sold individually.
Features:
- Body: 2.0" Metal impacted 6061-T6 Aluminum resists rust
- Body Plating: Clear anodized for a durable finish
- Internal Reservoir: IFP mono-tube design separates shock oil from high-pressure nitrogen
- Components: Black-anodized, CNC-machined 6061-T6 billet aluminum
- Shaft: 5/8" hard chrome plated heat-treated alloy steel
- Piston: Race-developed high-flow piston design
- Valving: Application-specific valving to optimize performance
- Seals: Redundant sealing pack system including main seal, wiper seal, scraper seal
- Oil: JM92 Advanced Suspension Fluid for improved performance at variable temperatures
- Bushings: Quiet nitrile rubber for increased suspension articulation
- Mounting: Direct replacement for stock and aftermarket lift kits
Specifications:
- Extended Length: 29.550"
- Collapsed Length: 18.450"
- Travel: 11.100"
- Top Mount: ES6
- Bottom Mount: ES6
- Applications: 2001-2019 GM 2500HD/3500HD - Rear, Lifted 4"-6"
Note: The lift height is recommended by Fox. Due to various aftermarket suspension systems, it is advised to take measurements for proper application. The image may not represent the exact product. Shock absorbers are sold individually.