Yes, it will.

I have an old RockShox Yari fork fitted factory on a 2017 Merida Big Trail 800. It’s done me very well, and I have no real reason to replace it. But, I do like a little bit of bling and security on my bike.

I was concerned that the sizing was off, based on my own measurements, but I was measuring from the wrong place. So if you have an older or newer RockShox fork and you too want to colour match to your hubs or want allen key hub security, then the Hope front bolt will be a good place to start.

Check the specs and measurements here if you want to be sure: https://www.hopetech.com/news/front-rear-axles-fitment-charts/

When measuring you need to measure from the end of your maxle / existing QR thru axle, not where the ‘pipe’ starts. Hopefully this picture explains it. However, if you have a Boost Rockshox fork, then you can expect that the Hope thru axle will fit.

If you want to check measurements, measure from the edge of the QR not the start of the ‘pipe’
Lather the axle up before inserting it and it should last an age

Hope this helps.