FOX 2.0 Performance Series IFP Front and Rear Shock Set
Equip your 2011–2026 Chevrolet Silverado or GMC Sierra 2500HD/3500HD with a four-shock FOX 2.0 Performance Series IFP set for a leveled front suspension and stock-height rear. Application-specific damping, aluminum bodies, and internal floating piston technology combine comfortable on-road performance with predictable handling on rough roads.
What's Included & Fitment
- Two shocks, part number 985-24-189
- Two shocks, part number 980-24-664
- Four shocks total for the front and rear suspension
- Listed application: 2011–2026 Chevrolet Silverado and GMC Sierra 2500HD/3500HD
- Front suspension: 1.5–3.5-inch leveling kit
- Rear suspension: stock height, 0 inches of lift
- Shock set only; leveling components are not included.
Consistent Damping for Your Leveled HD Truck
Precision metal-impact aluminum bodies increase cooling capacity and resist rust. The internal floating piston (IFP) monotube design separates shock oil from the high-pressure nitrogen gas chamber, preventing oil aeration so the factory-tuned precision valving can work consistently.
A race-developed high-flow piston and application-specific valving help control suspension movement over uneven surfaces. JM92 Advanced Suspension Fluid supports performance at variable temperatures, while nitrile rubber bushings provide quiet operation and allow increased suspension articulation.
Technical Specifications
| Body | 2.0-inch metal-impact 6061-T6 aluminum for rust resistance |
|---|---|
| Body finish | Clear-anodized for durability |
| Internal reservoir | Internal IFP monotube design separates shock oil from high-pressure nitrogen |
| Components | Black-anodized, CNC-machined 6061-T6 billet aluminum |
| Shaft | 5/8-inch hard-chrome-plated, heat-treated alloy steel |
| Piston | Race-developed high-flow piston design |
| Valving | Application-specific, factory-tuned precision valving |
| Seals | Redundant sealing pack with main seal, wiper seal, and scraper seal |
| Oil | JM92 Advanced Suspension Fluid for performance at variable temperatures |
| Bushings | Quiet nitrile rubber for increased suspension articulation |
| Mounting | Direct replacement for the stated stock-height rear and aftermarket front leveling applications |
Imported Catalog Application Note
The original individual front-shock catalog text lists: 2.0 Performance Series Smooth Body IFP, monotube, aluminum, clear anodize, front, 2.5–3.5-inch lift, HD, GM Fullsize Truck 2011–2018, each. This narrower catalog application differs from the set's stated 2011–2026 and 1.5–3.5-inch front-leveling fitment. Confirm compatibility with your suspension configuration before ordering.