Fox Racing Shocks 981-20-046 Performance Elite 2.0 x 4.5 Off-Road Air Shock

The Fox Racing Shocks 981-20-046 is a Performance Elite 2.0 x 4.5 Air Shock engineered for serious off-road applications. Featuring a 2.0" diameter body and 4.5" of travel, this compact air shock delivers the same race-proven damping technology found across the entire FOX Performance Elite Series lineup, making servicing and valving adjustments straightforward and consistent.

At the core of this shock is FOX's nitrogen-charged air spring design, which provides infinite spring rate adjustability simply by varying the nitrogen pressure — no coil spring swaps required. This allows precise tuning of ride height and spring force to match specific load and terrain demands. Do not fill with compressed air, as nitrogen is required to prevent internal corrosion.

Key Features:

• 2.0" Body Diameter with 4.5" stroke travel for compact, targeted suspension control
• Nitrogen-charged air spring with infinitely adjustable spring rate via pressure changes (10–500 PSI range)
• Race-proven Performance Elite damping technology — same valving platform as the full FOX off-road shock lineup
• Incredibly strong yet lightweight hollow shock shaft for reduced unsprung weight
• Zinc-plated seamless alloy body for superior corrosion resistance
• Hard chrome-plated shaft for long-term durability under extreme conditions
• Owner serviceable and rebuildable — designed for long service life and field maintenance
• JM92 MIL-SPEC shock oil for optimal performance in extreme off-road environments
• Black-anodized CNC-machined aluminum components for precision and reliability

The FOX 981-20-046 is built for off-road enthusiasts and competitors who demand consistent, tunable suspension performance. Its compact 4.5" stroke profile makes it well-suited for auxiliary or supplemental suspension roles such as hydraulic bump stop applications or short-travel racing builds.