Two silver, cylindrical Assault Industries Shock Reservoir Nitrogen Expansion Caps (for Fox Shocks) are shown—one upright with a top knob, one on its side revealing an end hole. A small black triangular logo appears at the bottom right.

Assault Industries Shock Reservoir Nitrogen Expansion Caps (Fits: Fox Shocks)

Sale price  $174.75 Regular price  $187.90
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Two silver, cylindrical Assault Industries Shock Reservoir Nitrogen Expansion Caps (for Fox Shocks) are shown—one upright with a top knob, one on its side revealing an end hole. A small black triangular logo appears at the bottom right.

Assault Industries Shock Reservoir Nitrogen Expansion Caps (Fits: Fox Shocks)

Sale price  $174.75 Regular price  $187.90

Assault Industries reservoir expansion caps increase the nitrogen volume in the shock absorbers. The result is a more consistent feel throughout the entire range of travel.

The caps are CNC machined from 6061 T6 billet aluminum to be as light and efficient as possible. The unique design features cooling fins to help with heat dissipation during aggressive use. High pressure nitrogen purge/fill valves make it easy to service shocks.

Note: These caps have been tested to fit most Fox brand external shock reservoirs. They may fit others. Additional compatibilities will be announced when available.

This product should be installed by a qualified professional

Package Contents

(2) Caps with seals, purge/fill valves


FITMENT

for Fox Shock reservoirs

The information in this listing was collected and considered accurate from https://www.superatv.com/assault-industries-shock-reservoir-nitrogen-expansion-caps-fits-fox-shocks-ai on 12/11/2025 11:01 PM

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