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Unitronic Carbon Intake System with Inlet B9 RS4/5 2.9TFSI

Marsoni M251S
Sale price$1042.99
Pay 4 payments of $260.75 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
Unitronic Carbon Intake System with Inlet B9 RS4/5 2.9TFSIThis Carbon Fiber Intake System and Turbo Inlet for the B9 and B9. 5 Audi RS 4 and RS 5 is designed to dramatically improve airflow with gains of up to 38% over the factory equipment while supporting both the stock turbochargers and hybrid turbochargers via Unitronic's clever 48mm and 51mm adapter rings. As with all Unitronic Intake Systems, this unit provides improved throttle response, seamless integration and perfect fitment while greatly enhancing
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  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
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4.6 ★★★★★
Based on 2066 reviews
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Lehc00
Alexandria, US
★★★★★ 5
True To Size
These shorts fit true to size and are so comfortable. They have a drawstring waist, so you can adjust them for the best fit and wide legs. They are 55% linen and 45% cotton so they keep you feeling cool. The classic colors go with nearly any other colors or designs, making them stretch your wardrobe potential and saving you money. They were extremely wrinkled upon arrival, so I used my fabric steamer, and within 5 min they looked perfect. I love these shorts and wear them all the time!
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Reviewed in the United States on May 27, 2025
S
Sydney J
Lexington, US
★★★★★ 4
Cute 2-pack pair of shorts
Color: Black, White, Size: Medium, Color: Black, White, Size: Medium
Cute shorts that have pockets and fit true to size. I love that they come in a pack of two as well. The black ones are my favorite and I feel like the fabric is a little softer on the black pair. The white ones are a little thinner than I would like. I was wearing an olive green colored underwear underneath them in the pictures in my review and though you can’t see them much, I do feel like they were slightly visible. The white pair also had a lot of loose strings on them which made me think the quality might not be as good as with the black pair. They washed easily and I hung them up to dry them because they smelled kind of funny when they arrived.
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Reviewed in the United States on June 7, 2025
T
Tiffany M
Lexington, US
★★★★★ 4
Good value for 2 shorts
These come vacuum sealed and have crazy wrinkles... so be prepared to do some ironing. I ordered the Mediums as I am a 6-8. The black pair feels a bit smaller than the beige pair... with both feeling tighter than I like for comfort. The look nice on, but feel like it constricts my belly a bit too much. Overall a nice basic set of shorts, perhaps size up for a more comfortable fit.
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Reviewed in the United States on June 15, 2025
S
Verified Purchase
Siobhan Smith
Los Angeles, US
★★★★★ 5
Super soft and comfortable!
I haven't bought new underwear in forever. I used to wear thongs, but now find them incredibly uncomfortable. The last few times I've tried to buy new underwear, the sizing was either way off (I'm a medium, but gave up after having to return them for a large and then extra large) or the quality was horrible (two brands stretch waaaay out and they can fall down while wearing them (I have larger ass-ets, so they shouldn't start to slide down during use). I tried these after buying some bamboo pyjamas and I love them! They are incredibly soft, comfortable, and stretchy. I can use them all day, and they work well, whether I'm lounging on the couch or wearing them under my spandex shorts at the gym, they don't ride up or slide down. They are both comfortable and look sexy, while providing support in all the right places. I haven't had them too long, so I can't speak on the durability, but they appear to be of good quality and I plan to order more, this time without the band.
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Reviewed in the United States on November 13, 2025
M
Verified Purchase
Mariel
Lexington, US
★★★★★ 5
Well made, light fabric. Waist doesn't roll.
These bamboo underwear really do keep you cool. They fit true to size, and wear easily. the wide elastic waist band doesn't roll on me. They are comfortable to wear, washed and dried easily. The material has some stretch to it, but not a lot. Well made, no stray strings. Perfect fit for me. Just what I was looking for.
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Reviewed in the United States on May 17, 2026

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