Fox 2.0 Factory Series 4in. Air Shock 1-1/4in. Shaft (Normal Valving) 40/90 - Black/Zinc

FOX devotes countless hours of research and development to design race-winning suspension that withstands incredible punishment and provides consistent performance you can rely on. Regardless of whether you are flying high over the desert or struggling to stick to a rock face on an off-camber climb, our shocks will give you the damping performance, suspension control and proper spring rate to get the job done.

Additional Information

Rebuildable and serviceable.

Part Type

Suspension Shock Absorber

• 100% Serviceable And Tunable For Longer Lifespan
• Black Anodized CNC Machined Aluminum Components
• Durable Zinc Plated Seamless Alloy Body
• FOX Racing Oil Developed For Ultimate Performance
• Fox Racing Oil Developed For Ultimated Performance
• Hard Chromed 4130 Alloy Steel Shaft
• Packed Race Winning Technology
• Packed With 35 Years Of Race Winning Technology
• Redundant Sealing System/Long Lasting Performance
• Teflon-Lined Heat-Treated Spherical Bearings

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Product Details

Product Downloads

#	Document Type	Download
1.	Installation Instructions
2.	Technical Drawing
3.	Technical Bulletin

Installation guides, warranty details, and other supporting documents are provided by the supplier. In some cases, these files may originate from regions outside your locale, meaning instructions, warranty procedures, and images may not fully align with your specific vehicle or region (e.g., LHD vs. RHD differences, return policies, etc.). If you need clarification, please contact a StreetFX support agent.

Reference Information

Air Shock, 2.0 Factory Race Series, 4 in. Travel, 1.250 Shaft, 40/90 Valving, Steel Body, Billet Aluminum Components

Fox Racing Shox 2.0 Factory Race Series air shocks' design allows for infinite adjustability of the spring rate by varying the nitrogen charge pressure. They're incredibly strong yet lightweight; their hollow shafts further reduce weight, making them ideal for competition rock crawlers. The shocks are available in a variety of extended and collapsed length options.

Additional product details:
• Smooth bore and honed seamless steel body
• Zinc plated and double clearcoated for a long-lasting finish
• Black anodized, CNC-machined 6061-T6 billet aluminum components
• Tunable valving, velocity sensitive deburred valve shims
• Redundant sealing pack system, main seal, wiper seal, scraper seal
• JM92 advanced suspension fluid for improved performance at variable temperatures
• Hard chromed 4130 steel, 1 1/4 in. diameter shaft
• Spherical, PTFE-lined heat-treated alloy steel bearings
• 1 1/2 in. mounting width spacers
• 500 lbs. max load