FOX Fox 20+ GM 2500/3500 HD 2.0 Performance Series IFP Rear Shock 1.5-3in Lift
FOX Fox 20+ GM 2500/3500 HD 2.0 Performance Series IFP Rear Shock 1.5-3in Lift
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Fox 20+ GM 2500/3500 HD 2.0 Performance Series IFP Rear Shock 1.5-3in Lift

FOX
FOX985-24-241
711745591257
Shocks and Struts
20+ Units In Stock - Ships Next Business Day
$ 229.95
$ 229.95

SKU: 985-24-241 | UPC: 711745591257

Fox 20+ GM 2500/3500 HD 2.0 Performance Series IFP Rear Shock 1.5-3in Lift

FOX Performance Series 2.0 IFP rear shocks upgrade the suspension on 2020-2024 Chevrolet Silverado 2500 HD and 3500 HD plus GMC Sierra 2500 HD and 3500 HD trucks with 1.5-3in rear lifts. Race-proven damping control delivers a comfortable ride on pavement and consistent handling off-road in rough terrain. Internal Floating Piston design separates oil and gas for fade-free performance under heavy loads or high speeds.

Key Features

  • 2.0 Aluminum Body: High-strength aluminum construction dissipates heat 3x faster than steel to maintain damping control during extended off-road use
  • Internal Floating Piston (IFP): Separates shock oil and nitrogen to prevent cavitation and ensure consistent performance over rough terrain or with heavy payloads
  • Application-Specific Valving: Velocity-sensitive damping tuned for GM HD trucks provides balanced comfort on highways and precise control in dirt rocks or dunes
  • PTFE-Plated Shaft: Low-friction coating reduces stiction for smoother action and longer seal life even after thousands of cycles
  • Eyelet Mounts: 5/8in eyelets at top and bottom for direct bolt-on fit with factory or aftermarket arms no modifications needed

Product Notes

  • Designed for 1.5-3in rear lift kits sold separately pair with matching Fox front shocks for complete setup
  • Clear anodized finish resists corrosion in salt mud or wash conditions
  • Single shock ships individually order quantity 2 for rear pair

Installation Notes

  • Professional installation recommended.
  • Bolt-on replacement uses factory mounting locations extended length 27.30in compressed 17.15in travel 10.15in
  • Requires 1.5-3in rear lift verify suspension setup before install

This Part Fits

Year Make Model Submodel
2020-2024 Chevrolet Silverado 2500 HD Custom
2020-2024 Chevrolet Silverado 2500 HD High Country
2020-2024 Chevrolet Silverado 2500 HD LT
2020-2024 Chevrolet Silverado 2500 HD LTZ
2020-2024 Chevrolet Silverado 2500 HD WT
2024 Chevrolet Silverado 2500 HD ZR2
2020-2024 Chevrolet Silverado 3500 HD High Country
2020-2024 Chevrolet Silverado 3500 HD LT
2020-2024 Chevrolet Silverado 3500 HD LTZ
2020-2024 Chevrolet Silverado 3500 HD WT
2020-2024 GMC Sierra 2500 HD AT4
2024 GMC Sierra 2500 HD AT4X
2020-2021 GMC Sierra 2500 HD Base
2020-2024 GMC Sierra 2500 HD Denali
2024 GMC Sierra 2500 HD Denali Ultimate
2022-2024 GMC Sierra 2500 HD Pro
2020-2024 GMC Sierra 2500 HD SLE
2020-2024 GMC Sierra 2500 HD SLT
2020-2024 GMC Sierra 3500 HD AT4
2020-2021 GMC Sierra 3500 HD Base
2020-2024 GMC Sierra 3500 HD Denali
2024 GMC Sierra 3500 HD Denali Ultimate
2022-2024 GMC Sierra 3500 HD Pro
2020-2024 GMC Sierra 3500 HD SLE
2020-2024 GMC Sierra 3500 HD SLT

Why Choose Fox?

  • Developed from Baja 1000-winning race shocks trusted by professional off-road teams
  • Precision CNC-machined components for exact fit and zero slop in demanding conditions
  • Engineered and assembled in the USA with strict quality controls

Frequently Asked Questions

  • Q: Will this fit my 2024 Silverado 2500 HD ZR2 with 2in lift?
    A: Yes it matches 2024 Chevrolet Silverado 2500 HD ZR2 rear suspension with 1.5-3in lift confirmed by Fox fitment guide
  • Q: What materials are used in construction?
    A: 2.0in diameter aluminum body clear anodized PTFE-plated piston rod and high-pressure shock oil for durability
  • Q: What warranty coverage applies?
    A: Limited lifetime warranty against defects in materials or workmanship covers normal use excludes abuse or racing

Shipping & Handling

  • Method: UPS Ground or FedEx
  • Availability: In stock - ships same or next business day
  • Packaging: Protective cardboard tube 28.5 x 7.5 x 7.5 inches
  • Weight: 7.20 lbs

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