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Seibon 18-20 Subaru WRX / STI Carbon Fiber Rear Diffuser

Marsoni M251S
Sale price$858.48
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Get it in 3 business days with 1 day shipping. Friday, May 29
Seibon 18-20 Subaru WRX / STI Carbon Fiber Rear DiffuserSKU: RD18SBIMP UPC: 887753487704 Seibon 2015 2021 Subaru WRX STI Carbon Fiber Rear Diffuser Transform the rear end of your 2015 2021 Subaru WRX or STI with the Seibon Carbon RD 18SBIMP rear diffuser. This direct fit component replaces the factory valance for improved downforce and ground effects. Handcrafted from premium carbon fiber, it reduces weight while enhancing stability at high speeds. Key Features Lightweight Construction: Reduces vehicle
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
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4.5 ★★★★★
Based on 373 reviews
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M
Verified Purchase
MT
Charlottesville, US
★★★★★ 3
Feels like it wouldn’t last very long.
Color: Black with Lid
Bottom line, most things just aren’t made with quality in mind anymore.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 25, 2023
J
Verified Purchase
Jill Brown
Grantham, US
★★★★★ 5
Perfect organizer
Color: Black with Lid
Elegant and just the right size.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 20, 2023
L
Verified Purchase
Lauren
Draper, US
★★★★★ 1
Don’t buy it. It doesn’t work.
Color: Black with Lid
Don’t buy it. It doesn’t work.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 7, 2025
D
Verified Purchase
David Pearl
Massapequa, US
★★★★★ 5
Effective & Attractive with Wireless Charging
Color: Blue, Color: Blue
This "valet" organizer, which is the first time I've heard that term for a product like this, is nearly perfect. For me, it checks all of the boxes and in a perfect world, I would have opted for a smaller piece with only three compartments for mobile, wallet, and keys. It's well made and quite attractive, especially the blue (favorite color, so I'm biased). The only feature I'm not a fan of is how the removeable, wireless charging pad was implemented, which sits up on a small lip at a slight incline. However, I'm not complaining one bit as the wireless charging is great, and it's a differentiator that determines the value of the piece. I would have preferred the pad be built into the piece, however the angle of it does make it easy to grab opposed to using your finger(s) to pry it up.
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Reviewed in the United States on September 8, 2024
D
Verified Purchase
Devon Edgerton
Birmingham, US
★★★★★ 5
Great nightstand valet for everyday items.
Color: Black+Green
Nice valet to add to a nightstand. Conveniently spaced sections to hold everyday items. Charging pad works great
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Reviewed in the United States on April 26, 2026

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