I'm not sure about the 885i engine but i have just fitted a Blueflame Titianium
Evo twin port on mine Fleabay £150, no Baffles were included.(sounds fantastic but not for long miles)
I rode 260 miles on Sunday gone and it was smooth but Bloody loud, I recieved a baffle set from Blueflame this morning and coverd 170 miles today and it's still silky smooth compared to the standard can and my ears arn't ringing either,Blueflame were very helpfull on the phone and the service was fantastic,The quality of the Exhaust speaks for it's self see pic's.
Also a quieter Exhaust will keep Outrunner (ANDY) Happy as I'm not a noisy Bugger any more

Dont look at the Jubilee clip I orderd the clap aswell
Hope this helps BIG BILL