“DELTA”?
Sorry, I’m not really an expert on this ★
It’s a slip-on, but

the silencer and tail pipe connection is super loose and sloppy ★
We didn’t want to resort to liquid gasket, so we had the folks at Ⅰ Manufacturing stretch it out with Nyoki-kun ★
With practiced hands

Scrrrrrape!

Pop!
Note: “No stroking allowed ★” — I wrote that just for fun.
Now let me check the valve clearance before we install it
Perfect ★ Thanks so much ~