Had a bike seize up and I’m having trouble finding parts. I’d prefer not shipping over seas but if it comes to that it’s fine. I need a cylinder/ jug, cylinder head and a piston to match. The bikes a 2018 gas gas txt contact. Also if anyone knows what the “pro” is I’ve seen after the title for these bikes. I’ve seen some parts for them wondering if I could get those, though to my knowledge it’s not a pro

The pro came out in 2002 and gas gas still had the standard edition Txt. You have the pro model engine.

Re-plating the cylinder may be less costly than replacing it.  If it's a light seizure, it's possible a diamond hone and new piston may be all that's needed.  It's not typical for the head to be damaged due to a seizure, and even then it may be repairable.  You don't say where you are located but if in North America, try https://millennium-technologies.com/