I've tried searching and using the googles to see if I could find any reviews all to no avail. Anyone use or know of someone with these downpipes? I am interested in knowing if the flex joint/bellows make any difference with vibration. I don't have or know anyone with DP's and not sure if there is a vibration issue.
https://www.racdyn-usa.com/PROD/130+10+63+330.html
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2015 F06 M6 Silverstone Metallic II, Individual Full Leather, B&O, Night Vis, CCB, RKAutowerks (CP Rods/Pistons, DI Cams, CF Intakes, Coated DP's & Billet Diff Brace), InfinityAuto Turbo Inlets, Mishi Oil Cooler, JB4, XHP S3, BM S3