Fox's 2021 36 Float air shaft now includes a top out bumper and a larger negative air chamber which provides for a smoother ride and better small bump compliance for when trails get rowdy.

130, 140, 150, 160, and 170mm air shafts fit Factory, Performance, and GRIP 27.5" / 29" 36 forks.170mm air shaft fits ONLY 27.5 or 29" LONG TRAVEL chassis 36 forks.

This air shaft is only for 2021 36 Float forks and is not backwards compatible with previous year models.

Fox 36 Float Air Shaft Assembly 2021

Rated 4.5 out of 5 stars
2 Reviews

SKU: 820-02-573-KIT

Barcode: 821973390512

Fox's 2021 36 Float air shaft now includes a top out bumper and a larger negative air chamber which provides for a smoother ride and better small bump compliance for... Read more


Select Size
  • 150mm
  • 170mm
  • 130mm
  • 140mm
  • 160mm


Delivery Information

We have a range of delivery options on orders. Most importantly, if your order is over £50 then delivery is free!

All Biketart orders are fully trackable. You will get a tracking number by email when your order is shipped which will allow you to track it with Royal Mail or DPD.

In-stock orders placed by 4pm will be processed the same day.

Any items displaying "in-stock with supplier, despatched in 2-3 days" on the product page cannot be despatched the same day as they will be shipped to us from the supplier when you place your order.

Read on to discover the delivery options available to you on your order.

Delivery Services

Standard Tracked: All orders over £50 are eligible for free standard tracked delivery by Royal Mail. For orders under £50 there is a £2.99 charge. Orders sent using standard tracked are usually delivered in 2-3 days.

Priority Tracked: For £3.99 your order is sent by premium tracked delivery which gives a 1-2 day (including Saturdays) delivery timescale. This service is provided by Royal Mail who will usually deliver on Saturdays. Orders must be placed by 4pm.

Next Day Courier: If you require next-working-day delivery then this is provided by DPD and is £6.99. Orders must be placed by 3.30pm and be fully in-stock in order to be processed before our daily DPD collection.

Saturday Delivery: You can select Saturday delivery options from DPD at the checkout.

Bike Delivery: Bikes are always delivered by courier. After placing a bike order your bike is fully assembled and tested before being carefully boxed for shipping. Because of this build process it is not always possible to offer next-day delivery on a bike. Please do get in touch if you want to know a specific despatch day on any bike on our website. Call us on 01227 832582 or email

Returns Info

We offer a 30 day return period on our items. We ask that items are returned in their original packaging and in re-sellable condition. We do not pay returns postage.unless we have made an error with your order.

We cannot accept the return if the item is not correctly packaged and is damaged in transit during the return trip back to us.

    Please do not stick any tape or labels to the products branded outer packaging.

      If you require an exchange it is recommended that you re-order the correct size/item and return the item you do not wish to keep to us for a refund.

        Customer Reviews

        Rated 4.5 out of 5 stars
        Based on 2 reviews
        Total 5 star reviews: 1 Total 4 star reviews: 1 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
        100%would recommend this product
        2 reviews
        • KH
          Keith H.
          Verified Buyer
          I recommend this product
          Rated 4 out of 5 stars
          3 days ago
          does the job

          Bought bargain fox 36 forks from bike tart , but they were 160mm travel, my Orbea Occam shouldn't have 160mm travel forks on it , but I thought it'd be ok... nah , ruined the excellent ride character , the nimbleness it once had , but I'd used my fox 34 140mm travel on another bike build, so bought this new airshaft instead ... does the job brilliantly , 36 at 140mm feels plusher than the 34 at 140mm , could be bigger air volume, I dunno... but isn't this aluminium stick and bobbin a lot over priced at £90??? I reckon it is , so I knocked a star off...

        • R
          Verified Reviewer
          I recommend this product
          Rated 5 out of 5 stars
          7 months ago
          Simple to fit; works as should

          Bought one to downsize my fox36 from 160mm to 150mm. Very easy to fit and performs exactly as it should, and as it did before, or better because it forced me to service the fork!

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