2021+ Fox Float 36 NA2 Air Shaft Assembly

Regular price: $106.00
Sale price: $106.00

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SKU: 820-02-575-KIT

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Ships within USA only

Pickup Available in our Bellingham, WA shop Store Info

Description
Product Question?

If you're looking to increase or decrease the travel of your 2021 or newer Fox Float 36 fork, simply snag one of these air shafts in the travel which you'd like to set your fork to, and swap it into your fork! The new 2021+ Air Shaft boasts a larger negative air volume chamber compared to the previous generation.

Fits all 2021+ Fox 36 Factory Series, Performance Series Elite, and Performance Series forks.
Does NOT fit the Fox 36 Rhythm.
Includes brand new seals pre-installed, plus a new foot nut and crush washer.
NOT BACKWARDS COMPATIBLE with older Fox 36 forks.

*NOT backwards compatible with older model years.

MPN:820-02-575-KIT

UPC:821973390536

We have a super in-depth video on Fox lowers service below which shows step-by-step how to pull your fork apart and swap out your air shaft. When you click to view the video it will start at the air shaft removal/swap procedure. Start at the beginning to watch the entire procedure!

2021+ Fox NA2 Air Shaft FAQ

Which models of Fox forks does this air shaft fit?

The 2021+ Fox Float 36 NA2 Air Shaft Assembly fits all model-year 2021 and newer Fox 36 forks in Factory Series, Performance Series Elite, or Performance Series.

This air shaft does NOT fit the Fox 36 Rhythm.

This air shaft is NOT backwards compatible with model-years previous to 2021. This is not an upgrade for previous forks, and it only fits in 2021 and newer models.

What is included with this air shaft?

The 2021+ Fox Float 36 NA2 Air Shaft Assembly includes a new air shaft, a new foot nut, a new crush washer, and all accompanying seals pre-installed. The air shaft is available in multiple travel options for you to choose from.

How do I properly install and lubricate this air shaft in my fork?

Below is the installation procedure we follow in our shop:

REMOVE THE AIR, remove the lower legs, and remove the current air spring.
Clean the inside of the air-side stanchion and lower legs like you normally would during a fork service.
On the new air shaft, carefully remove the upper piston seal, dip it in Fox 20wt Gold Oil, and reinstall it.
Place a dab of 20wt Gold on the top and bottom of the lower seal that slides on the shaft (base plate), and slide it back and forth to lubricate the lower seal.
Next, take a fingertip-sized dab of Slickoleum and dunk that finger into 20wt Gold Oil. Swab that mixture inside of the first few inches of the air-side stanchion. We do this about two times to accomodate for the 3cc's of factory recommended oil volume in the air chamber.
Install the new air shaft into the stanchion while depressing the air valve at the top of the stanchion to allow the air spring to slide in easily. The outer seal on the base plate wil now be lubricated when you insert the air shaft into the stanchion
Install the new snap ring, and you're all set. Reassemble the fork as you usually would during a normal fork service.

Will I need a new damper that matches the same length of travel as the new air shaft?

You do not need to pay any attention to your damper if you are decreasing your fork's travel, because the damper will just compress to accomodate for the reduced travel. Yes, you can even decrease your 180mm fork all the way down to 130mm and your damper will simply compress to the new travel without any negative effects.

However, if you are increasing the travel of your fork, then you need to check to ensure that you are not going above the maximum travel of your specific damper. Below is a list of the common dampers to the 2021+ Fox 36 chassis, along with their maximum travel according to the fork's wheel size:

Maximum Damper Travel (DO NOT EXCEED):

GRIP2 Damper Maximum Travel : 29" Fork = 170mm / 27.5" Fork = 180mm
GRIP Damper Maximum Travel : 29" Fork = 170mm / 27.5" Fork = 180mm
New 2020+ FIT4 Damper Maximum Travel : 29" Fork = 160mm / 27.5" Fork = 160mm

What supplies and accessories do I need to install the new air shaft in a fork with a GRIP or GRIP2 damper?

You will need Fox 20wt Gold Oil for the air-side lower leg bath, Fox 5wt PTFE Oil for the damper-side lower leg bath, Slickoleum to lubricate the dust wipers, a Syringe to get the oil in the fork, and a Fox Damper-Side Crush Washer to finish installation. The new air shaft includes a brand new crush washer, so there is no need to purchase one of those separately.

While the fork is taken apart, we also recommend replacing your Dust Wipers if the fork has about 75 hours or more of riding on it and has not had the current dust wipers replaced yet. To install the new the dust wipers, you will also need a Fox Seal Driver.

What supplies and accessories do I need to install the new air shaft in a fork with a FIT4 damper?

You will need Fox 20wt Gold Oil for both the air-side and damper-side lower leg bath oil, Slickoleum to lubricate the dust wipers, a Syringe to get the oil in the fork, and a Fox Damper-Side Crush Washer to finish installation. The new air shaft includes a brand new crush washer, so there is no need to purchase one of those separately.