Hello and welcome! Racer X hasn't been on here since April 11. I don't think there is a kit, but you may be able to piece it together. From what I see on the new GPS/MM parts site, it would probably cost around $200. Unfortunately, many of their parts listings don't include a picture so it's hard to be sure what you'd get. They list different triple clamps and damper units (shocks) for the Pro Series and the Max. I'm pretty sure you'd need a longer axle in addition to other parts. I would suggest contacting them and tell them you're interested in buying everything needed for the conversion. If you search parts by model, they only show a few parts; you need to scroll through all parts to find much of anything.
https://megamoto.co/parts/?limit=96&sort=featured&page=1
The Pro Series and Max do not have the same frame.
Thanks for the welcome, Charles!
Yeah, either the complete fork or piece it together. What I want to make sure first is that the triple clamps are going to fit, so any input on this would be great.
I actually asked MM customer service, I got a response from a guy named Tim, who said that the neck tubes are not the same, hence the triple clamps wouldn't fit. I know it's confusing because of the three different models (Pro, Max w/suspension, Max w/o suspension) so maybe he's talking about between the Pro and Max which, as you said, have different frames, but the Maxes with and w/o are the same frame, so the way to go would be a Max suspension fork (not the Pro, or maybe even the Pro's would fit), but Tim didn't follow on my request to clarify that.
Maybe someone that owns both can share.