If you&';re looking to increase or decrease the travel of your 2018, 2019 or 2020 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! Includes brand new seals pre-installed, plus a new foot nut and crush washer. Fits all 2018-2020 Fox 36 Factory Series and Performance Series Elite forks. NOT COMPATIBLE with Fox 36 Rhythm forks.