Difference between Shocker XL and Classic 4pc horns?

If any? Maybe im missing the obvious details or not?

I doubt I’m right, but I think the differences are that:
It has quick connect fittings
The air line is bigger (so the more air goes to the horns quicker, hince louder horns)

Nice bike. Welcome to the forum btmfw!

TO add to that it also comes with a 1/2 valve as well!

okay thanks.
But the horns themselves are the same?

yep horns are identical just different tubing/fittings/larger valve

http://www.trainhornforums.com/thread1603.shocker_xl_vs_shocker_vx.html

There is already a topic started on this issue.