Unitronic Carbon Inlet B9 RS4/5 2.9TFSI

Marsoni

M251S

$447.50

Get it in 3 business days with 1 day shipping. Friday, May 29

Unitronic Carbon Inlet B9 RS4/5 2.9TFSIThis Carbon Fiber Turbo Inlet for the B9 and B9. 5 Audi RS 4 and RS 5 is designed to dramatically improve airflow with massive gains over stock while supporting both the stock turbochargers and hybrid turbochargers via Unitronic's clever 48mm and 51mm adapter rings. Constructed of high quality 2 2 twill carbon fiber, this Turbo Inlet features a larger bore to draw massive amounts of air then with the help of its integrated divider, sends equal amounts

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This fits well in the vent frame and I am still able to close my vent. I really like the mount cause it solves a huge problem of where to put my phone securely... but I also hate it as well, because of the ugly logo on the face of it. "Batdiary"? Seriously? If I keep it I will look for a way to get rid of (or cover up) the extremely unattractive logo they selected. It makes it (and my trucks interior) look loke something for a child. I give it 5 stars because it deserves better than the 3.9 it had at the time of posting this. But for the love of everything clean and classy but still needing a mount, get rid of the bat logo!

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Reviewed in the United States on May 30, 2026

Verified Purchase

Charles R Lee

Waukegan, US

★★★★★ 4

No cheap plastic

Holds good

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Reviewed in the United States on March 24, 2026

Verified Purchase

David

Pawtucket, US

★★★★★ 3

Good, but minor issues

The build quality seemed impressive and it felt sturdy. When installed, it definitely stayed in the air vent without wiggling or coming loose after quite a bit of off roading and driving over washboards. I returned this thing and bought the "off roam" competitor because of two reasons: 1) the ball joints don't tighten down hard enough to lock the position of the mount firmly. It grips well when you don't touch it, but if you are trying to put the phone into the mount without both hands, it shifts and moves with minimal pressure. Kind of annoying for me, I feel the ball joints should tighten enough not to budge if given a tiny bit of force or accidental bump. 2) the inner springs of the phone holder started loosening and making an obnoxious vibrating/rattling sound after about a month. Any bump or minor rough surface caused this thing to rattle like loose change in a cup holder IF THE PHONE WASNT IN IT. If the phone was in the holder it didn't do this at all. It started to drive me crazy. If you can get past these two things it's built well enough and works perfectly fine. I just expect a bit more for $50-$60.

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Reviewed in the United States on November 1, 2025