Did a little research. Looks like they're an exotic Italian brand exhaust. Probably impossible to get here. They didn't even have an English option on their website. I used google translate to translate it to English and they don't really even seem to have international distributors.
wow that takes me back, i had a shark carbon exhaust on my FZR1000 years ago (til i chucked the bike up the road and had to fit something else). The quality of it was very, very high. Looks good on the XJ6.