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

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

Marsoni

M251S

$858.48

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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These are beautiful and the perfect size for the 12” wide boards I use. The lumber isn’t cut to exactly 12” so there is a slight gap in the back towards the wall which I like for cords, and the boards stay in place with bottom screws. These are very sturdy, thick, and solid. I have not had a single problem with any of them. They are easy to install and very functional. Definitely worth the cost. I have purchased a couple of times.

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Reviewed in the United States on December 28, 2024

Verified Purchase

M.J.

Cuba, US

★★★★★ 5

Excellent shelf brackets.

Size: 12 Inch, Color: Black

Perfect exactly as advertised. Correct measurement at 12 inches. Product supplies All the screw for mounting. High quality and very sturdy. Used in my pantry. No instructions but don’t really need.

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Reviewed in the United States on January 7, 2026

Verified Purchase

michael borton

Lowell, US

★★★★★ 5

Quality and great looking for everything.

Size: 10 Inch, Color: Black

Easy to use , and works and looks great in the garage.

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Reviewed in the United States on March 14, 2026