2015-2018 KTM SXF Triple clamp on 2019 SXF?

15.5 Factory Edition will fit. I believe those years had holes cut out in the top. The new 19's are solid.

The 19.5 Factory edition clamps and the Xtrig are definitely less stiff than stock.

Just the top clamp is stiffer. I’d swap you as I want the 19 top clamp on my 18.

2015.5+ will bolt right up to anything up to 2020. What are you looking to change as far as stiffness? More flex in what direction(s)?

For stock KTM/Husky stuff, the bottom clamp is the same for 2015.5 onwards, no changes at all. The top clamp has changed,though. 2015.5 and 2016 are the same and will be the most "flexy". 2017 and 2018 are the same and definately stiffer than the previous ones, and in 2019 they made it "stiffer" yet. I don't doubt it is, but I doubt anyone can feel the difference as the changes made for 19 were so minimal. And of course 2019.5 factory bikes have a completely different clamp altogether.

The upper clamp is obviously important, but the bottom clamp really makes the difference as far as stiffness. Big changes to the top clamp won't affect the overall stiffness as much as small changes to the bottom clamp will. Or in other words, most people won't be able to tell any difference regardless of which year stock KTM top clamp they're running.

Counter-intuitively, though, a stiffer clamp can actually result in a more plush feeling ride as the stiffer clamps keep the forks aligned better for less binding. This is the case with the KTM and why we designed our clamps significantly stiffer than stock.