Fox Performance Series IFP HTO Shock Absorber for 2011-2025 GM Silverado/Sierra Rear with 4-6 Inch Lift

The FOX 987-24-035 2.5 Performance Series IFP HTO Shock Absorber features advanced position-sensitive damping technology, larger 2.5" pistons, and vehicle-specific valving engineered to maximize on-road comfort and off-road performance for Chevy Silverado 2500HD/3500HD and GMC Sierra 2500HD/3500HD heavy-duty trucks. These premium FOX Racing Shocks utilize Type II anodized 6061-T6 aluminum construction that provides superior heat dissipation and corrosion resistance. The oversized 2.5-inch shock body incorporates Internal Floating Piston (IFP) mono-tube technology to separate high-performance shock oil from pressurized nitrogen gas, optimizing damping consistency and eliminating oil aeration for maximum valving performance.

Revolutionary Hydraulic Top Out (HTO) technology delivers position-sensitive rebound damping control for enhanced ride quality on pavement and off-road terrain. HTO technology reduces harsh top-out impacts and increases driver comfort by directing shock fluid through a secondary shim stack to control shock shaft velocity during extension. This advanced damping system is especially beneficial for lifted trucks running larger, aggressive tires or suspension systems exceeding OEM ride height specifications.

KEY FEATURES & SPECIFICATIONS:

• FOX Racing Shocks 2.5 Performance Series with HTO Technology
• 5/8" Hard Chrome Plated Heat-Treated Steel Shaft for Durability
• Application-Specific Valving Tuned for Silverado/Sierra HD Performance
• Internal Floating Piston (IFP) Mono-Tube Design
• Hydraulic Top Out (HTO) Position-Sensitive Damping System
• Fully Rebuildable and Re-Tunable for Long-Term Performance
• Type II Clear Anodized Body Finish with Superior Corrosion Protection
• High-Flow Velocity-Sensitive Damping for Consistent Performance
• 2.5" Impact Extruded 6061-T6 Aluminum Body for Maximum Heat Dissipation
• Sold Individually - Order Quantity Required for Complete Installation

FITMENT & INSTALLATION NOTES:

Manufacturer lift height specifications provided as reference guide. Due to variations in aftermarket suspension systems and lift kit configurations, professional measurement is recommended for proper fitment verification. Not compatible with lift kits requiring OEM mount modifications or relocations. Each shock absorber sold separately - order appropriate quantity for your specific application.

WARRANTY COVERAGE:

FOX Racing Shocks Limited Lifetime Warranty Protection