FOX 987-24-033 Fox 2.5 Performance Series IFP HTO Front Shock w/ 4-6" Lift | 2020-2025 GM Sierra/Silverado 2500HD/3500HD

Features:

• Fits 2020–2025 GM 2500HD/3500HD trucks
• Supports 4 to 6 inches of front lift
• 2.5" aluminum body for improved heat dissipation
• Type II anodized finish resists corrosion
• Internal Floating Piston (IFP) maintains damping control
• Hydraulic Top Out (HTO) reduces harsh rebound
• Optimized for heavier wheels and aggressive tires
• 5/8" hard chrome-plated shock shaft
• High-flow valving for smooth suspension response
• Specifically tuned for GM HD platform dynamics
• Direct bolt-on installation with OE mounting
• Not compatible with altered OE mount lift kits

Take Your Lifted Truck To The Next Level

When your 2020–2025 GM 2500HD or 3500HD is sitting tall on a 4 to 6 inch lift, you need suspension that matches that height with serious performance and control. The FOX 2.5 Performance Series IFP HTO front shock is built for that exact purpose, giving your truck a smoother, more planted ride across pavement, dirt, and everything in between. It’s engineered to tame the extra weight and travel that come with big tires and tall lift kits, helping you stay in control without sacrificing comfort. FOX’s Hydraulic Top Out technology adds a noticeable difference when the suspension reaches full extension, cutting down harsh top-outs and helping the ride feel more refined. It gives your front end more composure, especially when hitting dips or coming off ledges. This shock is just as at home hauling heavy gear as it is crawling over rough terrain. With a rugged aluminum body, durable chrome shaft, and a hassle-free bolt-on fit, it’s an upgrade that makes a big difference on and off the road.

Precision Built For Lifted GM HD Applications

The FOX 987-24-033 front shock is specifically designed for 2020–2025 Silverado and Sierra 2500HD and 3500HD models running a 4 to 6 inch front lift. Its 2.5-inch impact-extruded aluminum body is built to handle demanding conditions while maintaining excellent heat management, which helps prevent fade during long hauls or repeated off-road use. The Type II clear-anodized finish offers strong resistance against corrosion, making this shock a dependable choice for any climate. Internally, the nitrogen-charged design uses a floating piston to keep the shock oil and gas separate, delivering consistent damping regardless of the terrain or payload. FOX’s Hydraulic Top Out piston improves rebound control at full extension, especially important for high-travel front ends with oversized tires. The shock also features high-flow, velocity-sensitive valving tailored specifically to the dynamics of GM’s HD platform. It bolts up directly to factory mounting points, as long as the lift kit retains OEM geometry. With 6.49 inches of travel and a durable chrome shaft, this shock provides long-lasting performance that keeps up with the demands of a heavily lifted truck.

Fits: 2020, 2021, 2022, 2023, 2024, 2025 GM Sierra/Silverado 2500HD/3500HD

Notes:

• Compatible with 2020–2025 GM 2500HD/3500HD trucks
• Designed for 4–6 inch front suspension lifts
• Not for use with lift kits altering OE mounts
• Sold individually; purchase two for both front wheels
• Ideal for trucks with larger, heavier tires
• Direct bolt-on installation; no modifications needed
• Hydraulic Top Out (HTO) enhances rebound control
• Internal Floating Piston (IFP) maintains damping consistency
• Aluminum body efficiently dissipates heat
• Type II anodized finish resists corrosion
• 5/8" hard chrome shaft offers durability
• Vehicle-specific valving ensures optimal performance
• Fully rebuildable and re-tunable for longevity

Install Instructions