📹 NEW VIDEO - 2025 Fox 36 & 38 Forks
Cart

(360) 306-8827
2021+ Fox Lower Leg Pressure Release Button - The Lost Co. - Fox Racing Shox - 820-09-088-KIT - 821973422619 - -
2021+ Fox Lower Leg Pressure Release Button - The Lost Co. - Fox Racing Shox - 820-09-088-KIT - 821973422619 - -
2021 Fox Lower Leg Pressure Release Button - The Lost Co. - Fox Racing Shox - 820-09-067-KIT - 821973395104 - Default Title -

2021+ Fox Lower Leg Pressure Release Button

$ 25.00 USD
$ 25.00 USD
Quantity must be 1 or more
In Stock, Ready to Ship!
820-09-088-KIT
Ships within USA only

Pickup Available in our Bellingham, WA shop Store Info

  • The Lost Co

    Pickup Available, usually ready in 24 hours

    2106 Pacific Street
    Ste 102
    Bellingham WA 98229
    United States

    +1 (360) 306-8827

These Fox Lower Leg Pressure Relief Valves (or buttons as some like to call it) are used to replace your damaged valves from your 2021+ Fox 36 or 38, or used to upgrade the 2021+ Fox 36/38 Performance Series forks that only have the blank plug installed in their ports.

Includes:

  • (2) replacement valves/buttons
  • (2) replacement crush washers
  • (2) bleed port protectors
MPN:820-09-088-KIT
//
UPC:821973422619
Liquid error (snippets/product-form line 26): include usage is not allowed in this context .

FAQ

Can I install the pressure relief valve buttons on a Fox 38 Performance GRIP fork?

Yes, you can install these into any Fox 36 or 38 with the threaded holes for the pressure relief valves on the back of the lower legs. This includes the Performance Series with GRIP damper. There is a bolt (or plug, as Fox calls it) in the threaded hole that you will unthread and remove, and then thread in these pressure relief valves.

How do I install the pressure relief valve buttons on a Fox 38 Performance GRIP fork?

*Perform this installation with the fork positioned face down, or tilted forward in a repair stand, or with the bike flat on the ground with both tires. If you attempt to remove the valves/plugs with the fork upside down or tilted upward, you wil lose oil from your fork's lower legs.

  • Start by removing the plug bolts from the back of the lower legs on your Fox Performance Series 36 or 38 with a 5mm allen wrench.
  • You will then replace the plugs with the new bleeder valves by threading them into the fork by hand until snug.
  • Next, use a 13mm socket to tighten the bleeder valve to a final torque of 45 in-lb (5.0 Nm).

You can find full installation instructions by Fox here: 2021 36mm and 38mm Mud Guard Installation

What are the torque specs for installation of the pressure relief buttons?

When installng and tightening the Fox 36/38 lower leg pressure relief valves, you will torque them to 45 in-lb (5.0 Nm) using a 13mm socket.

Should I use the red rubber caps to cover the bleed valves after installation?

Those red rubber caps that are included in the kit are used primarily for shipping reasons. Brand new aftermarket Fox 36 and 38 forks that come from the factory with the bleeder valves will have these rubber caps protecting the valves while in the box to protect them from damage during shipping. There is no downside to using them on your bike, but they are definitely not needed for any purpose of keeping debris out of the valves or anything. It is very uncommon for us to see anyone using these covers after being taken initially taken off from the package.

FAQ

Can I install the pressure relief valve buttons on a Fox 38 Performance GRIP fork?

Yes, you can install these into any Fox 36 or 38 with the threaded holes for the pressure relief valves on the back of the lower legs. This includes the Performance Series with GRIP damper. There is a bolt (or plug, as Fox calls it) in the threaded hole that you will unthread and remove, and then thread in these pressure relief valves.

How do I install the pressure relief valve buttons on a Fox 38 Performance GRIP fork?

*Perform this installation with the fork positioned face down, or tilted forward in a repair stand, or with the bike flat on the ground with both tires. If you attempt to remove the valves/plugs with the fork upside down or tilted upward, you wil lose oil from your fork's lower legs.

  • Start by removing the plug bolts from the back of the lower legs on your Fox Performance Series 36 or 38 with a 5mm allen wrench.
  • You will then replace the plugs with the new bleeder valves by threading them into the fork by hand until snug.
  • Next, use a 13mm socket to tighten the bleeder valve to a final torque of 45 in-lb (5.0 Nm).

You can find full installation instructions by Fox here: 2021 36mm and 38mm Mud Guard Installation

What are the torque specs for installation of the pressure relief buttons?

When installng and tightening the Fox 36/38 lower leg pressure relief valves, you will torque them to 45 in-lb (5.0 Nm) using a 13mm socket.

Should I use the red rubber caps to cover the bleed valves after installation?

Those red rubber caps that are included in the kit are used primarily for shipping reasons. Brand new aftermarket Fox 36 and 38 forks that come from the factory with the bleeder valves will have these rubber caps protecting the valves while in the box to protect them from damage during shipping. There is no downside to using them on your bike, but they are definitely not needed for any purpose of keeping debris out of the valves or anything. It is very uncommon for us to see anyone using these covers after being taken initially taken off from the package.