FOX Performance Elite 2.5-Inch 12-Inch Air Shock, 1-5/8-Inch Shaft, Normal Valving 40/80 - FOX981-25-051

The design of the off-road Performance Elite air shock allows for infinite adjustability of the spring rate by varying the nitrogen charge pressure. FOX's first air shock was invented by Bob Fox back in 1974 and has been highly refined in the 30-plus years we’ve been producing them. The off-road Performance Elite air shock uses the identical race-proven performance damping technology as our other Performance Elite Series off-road shocks, so servicing and valving adjustments are the same. Incredibly strong yet lightweight hollow shock shafts further reduce weight on these shocks that are ideal for competition rock crawlers. Rebuildable and serviceable. Custom valving options available.

• JM92 MIL-SPEC oil developed specifically for off-road racing
• Durable clear coated, zinc plated seamless alloy body
• Durable Clear Coated; Zinc Plated Seamless Alloy Body
• Black Anodized CNC Machined Aluminum Components
• Hard Chrome Plated 4130 Chromoly Steel Shaft
• Hard chome plated 4130 chromoly steel shaft
• Owner serviceable and rebuildable

The FOX Performance Elite 2.5-Inch Air Shock is designed for competition rock crawlers and demanding off-road applications where lightweight construction, precise damping, and serviceability are essential. Its air-spring design allows infinite spring-rate adjustment by varying nitrogen charge pressure, helping drivers fine-tune suspension performance for terrain, vehicle setup, and driving conditions. FOX Performance Elite shocks use race-proven damping technology shared across the Performance Elite Series, allowing consistent servicing and valving adjustments.

Part number FOX981-25-051 features normal 40/80 valving, a 12-inch shock configuration, and a lightweight 1-5/8-inch hollow shaft. The durable seamless alloy body is clear coated and zinc plated for added corrosion resistance, while black-anodized CNC-machined aluminum components help reduce weight without sacrificing strength. JM92 MIL-SPEC oil, developed specifically for off-road racing, supports reliable damping performance under demanding operating conditions.

• Adjustable Air Spring: Vary nitrogen charge pressure to fine-tune the spring rate for different vehicle configurations and terrain.
• Race-Proven Damping: Performance Elite damping technology delivers controlled suspension response for competition off-road use.
• Lightweight Strength: Hollow, hard-chrome-plated 4130 chromoly steel shaft construction reduces weight while maintaining durability.
• Serviceable Design: The shock is owner-serviceable and rebuildable, with custom valving options available for specialized setups.

Each FOX Performance Elite air shock is supplied as an individual shock assembly. Installation hardware, nitrogen charging equipment, and vehicle-specific mounting components are not specified as included. Verify mounting configuration, required shock travel, vehicle application, and valving requirements before installation. This product is intended for off-road automotive use and is not identified as emissions-certified for on-road applications.

Features:

• Adjustable air spring allows the spring rate to be tuned by varying nitrogen charge pressure.
• Race-proven Performance Elite damping technology supports controlled off-road suspension performance.
• JM92 MIL-SPEC oil is formulated specifically for off-road racing applications.
• Clear-coated, zinc-plated seamless alloy body provides durable corrosion-resistant construction.
• Black-anodized CNC-machined aluminum components help reduce weight and maintain strength.
• Hard-chrome-plated 4130 chromoly steel shaft is engineered for demanding competition use.
• Owner-serviceable and rebuildable design simplifies long-term maintenance.
• Custom valving options are available for specialized vehicle and driving requirements.

Air Freight Prohibited: false
Not Carb Approved: false
Carb Acknowledgement Required: false
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Regular Stock: t
Units Per Sku: 1