1999-2016 Ford Super Duty 4WD REAR FOX 2.0 Performance Series Shocks Pair
FOX Performance Series 2.0 IFP Rear Shocks (1999–2016 Ford Super Duty)
Upgrade your truck or SUV with the FOX Performance Series 2.0 IFP smooth body shocks—engineered to deliver a balance of on-road comfort and off-road control. Built with race-proven damping technology, these shocks provide consistent, predictable performance in even the harshest conditions.
Designed for durability and performance, the aluminum shock body improves heat dissipation while resisting rust over time. Inside, FOX’s Internal Floating Piston (IFP) mono-tube design separates oil from the high-pressure nitrogen gas chamber, eliminating aeration and maintaining consistent damping performance. Combined with application-specific valving and a high-flow piston, these shocks deliver a smooth ride with the capability to handle demanding terrain.
Key Features
- Race-proven damping control for improved ride quality
- Smooth, predictable handling on and off-road
- Internal Floating Piston (IFP) mono-tube design
- High-flow piston for consistent damping performance
- Application-specific valving for optimized performance
- Aluminum body for improved cooling and corrosion resistance
Construction & Materials
- Body: 2.0" impact-extruded and CNC-machined 6061-T6 aluminum
- Finish: Clear anodized for long-lasting durability
- Reservoir: Internal IFP mono-tube design
- Components: Black anodized CNC-machined 6061-T6 billet aluminum
- Shaft: 5/8" hard chrome-plated, heat-treated alloy steel
- Piston: Race-developed high-flow design
- Valving: Application-specific tuning for optimal performance
- Seals: Redundant sealing system (main seal, wiper, scraper)
- Bushings: Nitrile rubber for quiet operation and increased articulation
Specifications
Part Number: 980-24-647
- Lift Range: 0–1" Lift
- Position: Rear
- Item: Shock Absorber
- Quantity: 2
- Extended Length: 29.55"
- Compressed Length: 18.45"
- Travel: 11.1"
- Top Mount: Eyelet
- Bottom Mount: Eyelet/Sleeve
- Reservoir: Internal Floating Piston (IFP)
- Color: Aluminum
Part Number: 980-24-653
- Lift Range: 1.5–3.5" Lift
- Position: Rear
- Item: Shock Absorber
- Quantity: 2
- Extended Length: 32.75"
- Compressed Length: 20.15"
- Travel: 12.6"
- Top Mount: Eyelet
- Bottom Mount: Eyelet/Sleeve
- Reservoir: Internal Floating Piston (IFP)
- Color: Aluminum
Fitment
Ford F-250 Super Duty (1999–2016)
- 4WD Models
- Rear Position
- Fits 0–1" Lift Applications
Ford F-350 Super Duty (1999–2016)
- 4WD Models
- Rear Position
- Fits 0–1" Lift Applications
Ford F-450 Super Duty (2005–2016)
- Rear Position
- Fitment varies by lift height (1.5"–5.5" depending on configuration)
Ford F-550 Super Duty (2005–2016)
- Rear Position
- Designed for 4.5"–5.5" Lift Applications
Performance Benefits
- Maintains consistent damping by preventing oil aeration
- Handles rough terrain while maintaining ride comfort
- Improved heat dissipation for long-lasting performance
- Quiet operation with enhanced suspension articulation
Installation Notes
- Direct replacement for factory shock absorbers
- Designed for specific lift ranges (see part number fitment)
- Professional installation recommended
What’s Included
- (2) FOX Performance Series 2.0 IFP Rear Shock Absorbers
Built Right. Backed Right.
Our crew’s on call Monday–Friday, 9–5 EST. Hit us up at 865-983-5004 — real support, done right.
Why Fox Shocks
Fox shocks are well-regarded in the off-road and performance world because they combine durability, advanced damping technology, and customization options that suit a wide range of vehicles and driving styles. For 4WD trucks, the “best” Fox shocks depend on how you actually use the truck — daily driving, towing, trail riding, or hardcore off-road.
Fox Shocks FAQ's
Should I Get 2.0 or 2.5 Shocks
Choose Fox 2.0 if:
You prioritize a smoother daily ride.
You stick to moderate trails and lighter off-road use.
Budget-friendly performance is key.
Choose Fox 2.5 if:
You demand more from your suspension—like aggressive off-roading, towing, or extended high-speed use.
You need better heat management and durability.
You don’t mind paying a bit more for enhanced performance and longevity.
Why Monotube Shocks Excel on Lifted Trucks
Handles Added Unsprung Weight – Larger wheels/tires from a lift add rotational mass and stress to your suspension. Monotube designs have better damping control to keep those tires planted.
Better Heat Dissipation – The single-tube design allows oil and gas to cool more efficiently, preventing fade during towing, off-roading, or long highway runs.
More Precise Handling – They respond faster to suspension movement, which is critical when correcting for body roll in a taller truck.
Will Better Shocks Improve Ride Quality
Tightening Up a Floaty Vehicle
If your truck feels like it’s “floating” or wandering at highway speeds, new shocks will firm up the suspension, improve steering response, and keep the body from rolling excessively in turns.
This doesn’t necessarily make the ride softer — it makes it more controlled.
Reducing Harsh Bouncing & Jarring
If you’re feeling hard bounce after hitting a bump (especially front or rear “pogo stick” motion), your shocks likely have lost rebound damping.
New shocks restore that damping, keeping your tires on the ground and absorbing energy before it reaches you.
Why Measure Shocks and Lift Height
1. Improved Ride Comfort
Matching the right shocks to your truck’s lift height enhances ride comfort. Ill-fitting shocks can cause a harsh, bumpy ride and limit suspension travel.
2. Better Handling & Control
Shocks sized for your lift height improve steering stability, cornering, and overall control — especially on rough terrain or with larger tires.
3. Increased Safety
The right shocks keep your tires in consistent contact with the ground, reducing the risk of skids, loss of control, or suspension component damage.
4. Greater Durability
When shocks operate within their intended range, they last longer and protect other suspension parts from premature wear.
5. Optimal Performance
A well-matched suspension setup ensures your truck performs at its best, whether you’re off-roading, towing, hauling, or commuting daily.