I installed this muffler on a 2019 890 Duke R. The titanium version looks super clean, and is light and well made. The link pipe took on a nice champagne and blue hue once ridden. The dB Killer is easily removed with a 10mm wrench. On my 890, I found that a combination of the Arrow decat pipe and the Pro Race with dB Killer installed was good in terms of a balance between noise and obnoxiousness/pain. This setup has a nice rasp (and howl at higher rpms) and brought approving comments from my friend who has a great sounding ZX-14. With the dB killer out and no cat, it was too much for me and could be pretty inconsiderate in a residential situation (117 dB at cold start). In the end, I switched to an SC Project SC1R for aesthetic reasons and to hedge against sound levels without the catalytic converter being too much. I live in a place where it is not easy to buy these parts so I have to plan ahead. But anyway, the visual presence of the SC Project muffler does it for me, the Arrow looked a little insubstantial (no this is not that "size" discussion, it is more about the way all the hardware comes together at the back of the bike and the Arrow from some angles looked unnaturally short to me but as is evidenced by the marketplace, a lot of riders like this type of product)
