+1 for the Desmoworld billet baffles. I had a pair for my 1100 Evo.
https://www.desmoworld.com/monster/m...0/auspuff/?p=2
Note that the Desmoworld versions aren't full baffles - they are still straight through and their loudness is about half way between silenced and fully open.
If you want more silencing, you can get genuine Termi replacements from Carbon4Us in Spain for €43 per baffle.
https://www.carbon4us.com/en/escapes...-796-1100.html
I've bought carbon stuff from them before and had no complaints.