Great looking tips. I have a couple of Q's?
1. Is the ring you are talking about has a step diameter in it self? One fits the OEM pipe dia and the other fits the tip dia?
2. Did that clamp come with the reactive tips?
3. Did you remove the bumper to install or was it easy to cut off the OEM pipes with the bumper on? How did you cut them (saw)?
Thx much.

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Current:
2017 640Xi Convertible
2011 Acura MDX
2018 Santa Fe

Past:
2013 Honda Accord
2008 Acura TL Tech.------2004 BMW X5 4.8is----2004 Acura MDX Tech
1994 BMW 525i.----------1994 Lexus 300 GS.----1994 Acura Legend GS
1991 Acura Legend LS.----1991 Honda Accord.----1991 300ZX twin turbo
1996 Buick Regal GS.-----1984 300Z 50th anniv.--2002 BMW X5
1982 280Z