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2017-2024 Audi RS4 B9 BKSS Style Rear Diffuser w/ Caps
2017-2024 Audi RS4 B9 BKSS Style Rear Diffuser w/ Caps
2017-2024 Audi RS4 B9 BKSS Style Rear Diffuser w/ Caps
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2017-2024 Audi RS4 B9 BKSS Style Rear Diffuser w/ Caps

Marsoni M251S
Sale price$4866.06
Pay 4 payments of $1216.52 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
2017-2024 Audi RS4 B9 BKSS Style Rear Diffuser w/ CapsCondition: Brand New Material: CFRP FGCF DryCF Fits 2017 2024 Audi RS4 B9 Package Contents: One Rear Diffuser w LED Light One pair of Rear Caps Part No: CF8374BKSS RD CF8374BKSS RLCA _________________________ Have Questions about Material options? Visit our Parts Material FAQ's Page! Items not in stock will show a "Pre Order" instead of an Add to cart checkout button. Upon checking out with an out of stock item, you may select to either have the item
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 1733 reviews
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Product Reviews
C
Verified Purchase
Charlie J
Natrona Heights, US
★★★★★ 4
Good quality
Size: 10 sqft
I wish it was a little better but it definitely works great and look good for how cheap it is
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 23, 2026
R
Verified Purchase
R. Selberg
Fort Morgan, US
★★★★★ 5
Works well
Size: 10 sqft
Worked great at a budget price. I used it to damp a fiberglass loudspeaker horn. Easy to work with too.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 8, 2026
D
Verified Purchase
Devan
Charlottesville, US
★★★★★ 5
Good material but bites back
Size: 20 sqft
Very good product for my rear trunk and backseat on my mustang. I would recommend some type of gloves due to the foil itself when placing down will cut up your hands and fingers. Overall good product for its price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
K
Verified Purchase
K.M
Battle Creek, US
★★★★★ 5
Great and light!
Style: 30 pcs
Worked out great. Good stuff and sound deadens the vehicle without adding a ton of weight.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 3, 2026
R
Verified Purchase
Robert N.
West Palm Beach, US
★★★★★ 4
Buy this!!!!
Style: 30 pcs
Very thick and effective. Sticks well too. Great buy
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026

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