Newest SX-F fork fitment on last Gen

I have had my 2016-17 black conevalve forks on every year ktm 2016.5 up to 24 ….everything fits, I adjust the forks in clamp depending on track conditions….so they should slide right in….

Some cartridges don’t fit some fork tubes. I think 21+ is all the same. A whole fork should be good to go. 

@sandman768 and @wrc777 are dead on.  
You can pretty much directly swap anything from the full size SX-F lineup from 2016 - 2025 without issue.  

Air forks from 2021+ have a different lug and cartridge assembly in both sides but the tubes are the same.  
All of it is 950mm from the top of the upper tube to the axle center.

You'll feel a significant improvement upgrading a 2016.5 - 2020 bike to a 2021+ air fork if the valving is for a similar size engine.
On the other hand putting a 450SX-F fork on a 125SX will require some valving changes.

Husqvarna standard TC and FC models have a shorter fork (940mm) while the Rockstar Editions are the same as a KTM (950mm).