FOX 2.0 Performance Series Rear Shock 1999-2019 GM 3.5-6.5″ Lift
Fox Performance Series 2.0 IFP Rear Shock 1999-2019 GM (3.5"–6.5" Lift)
Upgrade your suspension with the Fox Performance Series 2.0 IFP Smooth Body Shock, engineered with the latest in shock technology to transform the performance of your truck or SUV. Utilizing race-proven damping control, these shocks deliver a comfortable on-road ride while maintaining predictable handling in even the toughest off-road conditions.
The Performance Series 2.0 IFP shock is built around a precision aluminum smooth body, which increases cooling capacity and will not rust over time. Inside, Fox’s race-proven performance valving works in conjunction with a high-flow damping piston to deliver a predictable and controlled ride across a wide range of conditions. The monotube Internal Floating Piston (IFP) design separates shock oil from the high-pressure nitrogen gas chamber, eliminating oil aeration and ensuring consistent damping performance. This advanced design allows the shock to maintain maximum efficiency, even under demanding use. Combined with application-specific tuning, these shocks provide a balanced ride quality that handles rough terrain with confidence while still maintaining comfort for daily driving.
Key Features
- Monotube IFP (Internal Floating Piston) design for consistent damping
- Precision metal impact aluminum body for increased cooling and corrosion resistance
- Race-proven high-flow damping piston with application-specific valving
- Nitrogen-charged design to reduce shock fade and improve performance
- Direct bolt-on replacement for factory shocks
- Designed for reliable performance on and off the road
Build & Performance
The Performance Series 2.0 IFP shock is built around a precision aluminum smooth body, which increases cooling capacity and will not rust over time. Inside, Fox’s race-proven performance valving works in conjunction with a high-flow damping piston to deliver a predictable and controlled ride across a wide range of conditions.
The monotube Internal Floating Piston (IFP) design separates shock oil from the high-pressure nitrogen gas chamber, eliminating oil aeration and ensuring consistent damping performance. This advanced design allows the shock to maintain maximum efficiency, even under demanding use.
Combined with application-specific tuning, these shocks provide a balanced ride quality that handles rough terrain with confidence while still maintaining comfort for daily driving.
Installation
- Install Time: 1–2 hours
- Difficulty: Easy to Moderate
- Installation Type: Direct bolt-on
- Hardware: Factory hardware reused unless otherwise specified
No special modifications are required, making installation straightforward for most applications.
Fitment
Compatible with rear applications on the following vehicles with lift heights noted:
- 2002–2006 Chevrolet Avalanche 2500 (3.5"–6.5" lift)
- 2001–2007 Chevrolet Silverado 1500 HD (4"–6" lift)
- 1999–2019 Chevrolet Silverado 2500 / 2500 HD (4"–6" lift)
- 2001–2019 Chevrolet Silverado 3500 / 3500 HD (4"–6" lift)
- 2000–2013 Chevrolet Suburban 2500 (4"–6" lift)
- 2001–2007 GMC Sierra 1500 HD (4"–6" lift)
- 1999–2019 GMC Sierra 2500 / 2500 HD (4"–6" lift)
- 2001–2019 GMC Sierra 3500 / 3500 HD (4"–6" lift)
- 2000–2013 GMC Yukon XL 2500 (4"–6" lift)
- 2003–2009 Hummer H2 (4"–6" lift)
Specifications
- Series: Performance
- Travel: 11.12"
- Rear Lift Height: 3.5"–6.5"
- Extended Length: 29.62"
- Compressed Length: 18.5"
Construction & Materials
- 2.0" impact-extruded and CNC-machined 6061-T6 clear anodized aluminum one-piece body
- Clear-anodized body plating for long-term durability
- Black-anodized, CNC-machined 6061-T6 billet aluminum components
- 5/8" hard chrome plated, heat-treated alloy steel shaft
Internal Components
- Race-developed high-flow piston design
- Application-specific valving to maximize performance
- Internal Floating Piston (IFP) separates oil from high-pressure nitrogen gas
- Redundant sealing system with main seal, wiper seal, and scraper seal
Mounting
- Top Mount: Eyelet
- Bottom Mount: Eyelet
Notes
- Always verify fitment using your vehicle’s year, make, model, and suspension setup before ordering
- Sold individually unless otherwise specified
Why Choose Fox Performance Series 2.0 IFP?
Fox Performance Series shocks are backed by race-developed technology and engineered for real-world performance. With consistent damping, improved heat dissipation, and durable construction, they offer a reliable upgrade over factory shocks for both daily driving and off-road use.
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.