If you lookat the picture, there's a small threaded hole which is at the bottom when the db killer is fitted. A corresponding hole drilled in the outlet of your exhaust & a small screw/ bolt sorts it out.
My bike has just been MOTd with 50mm Termis on. No problem at all. In fact I think they rather enjoyed them, there was plenty of extra blipping of the throtle going on !! U2U me if you need the dealers details. Regards Kev
From what I understand, db killers get 50mm Termis' down from around 118db to 95-97db.. Does anyone know how loud a standard can is in comparison? Cheers.