SKU: 54781298402

SMY Carbon Fiber Full Rear Valance Diffuser 3 Piece Kit 2015-2021 WRX / STI

Sale price$267.41 Regular price$297.12
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  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 16 - Jul 21

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Description

SMY Carbon Fiber Full Rear Valance Diffuser 3 Piece Kit 2015-2021 WRX / STIDescription: Add some pep to your rear bumper with this three piece full carbon fiber rear diffuser. This diffuser adds a more aggressive high end look to the ass of your car. Easy to install using the supplied hardware and 3m tape. Drilling of 6 holes is required on the bottom of the bumper only. Going back to stock is not an issue because the holes are on the bottom. The kit also mounts using OEM clips and supplied 3M molding tape. Features: Carbon

Description:
Add some pep to your rear bumper with this three-piece full carbon fiber rear diffuser. This diffuser adds a more aggressive high-end look to the ass of your car. Easy to install using the supplied hardware and 3m tape. Drilling of 6 holes is required on the bottom of the bumper only. Going back to stock is not an issue because the holes are on the bottom. The kit also mounts using OEM clips and supplied 3M molding tape.

Features:
- Carbon Fiber Throughout
- 2x2 Weave
- Gloss Finish
- Simple Bolt-on Installation
- Not Flimsy / Very Strong Construction

Includes:
- 1 x Driver Side Carbon Fiber Exhaust Trim
- 1 x Passenger Side Carbon Fiber Exhaust Trim
- 1 x Center Carbon Fiber Trim
- 1 x Roll of 3M Molding Tape
- 6 x 316 Stainless Steel Screws & Washers
- 6 x 316 Stainless Steel Nylon Nut Inserts
- 6 x Black Screw Caps (to protect screw had from elements)

Notes:
- Does Not Fit With JDM Aero Splash Guards
- Fits With USDM Aero Splash Guards ((Slight trim of underneath corner required)
- Fits with Rear Lips
- Fits with Mud Flaps
- Tight fit with tips over 3.5inchs
- 6 Holes are required to be drilled for hardware
- Rear Brake Light Fits As Well
- Silicone is Required to adhere to the side panels as well as required as a seal between the body of the bumper and the Carbon Fiber Valance.  The seal should be around the entire outside part to keep water from seeping in-between. 3M tape alone will not hold the product to the textured valance of the OEM bumper.

Applications:
2015-2021 WRX
2015-2021 STI

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
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
SKU: 54781298402

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4.3 ★★★★★
Based on 12 reviews
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BSakFL
Dallas, US
★★★★★ 5
Great shirt, a bit large in arms
Color: A - Moon Gray, Size: Medium
I really like the cut and texture of the shirt. The only thing I would say is it is loose in the arms unless you’re a body builder. My arms are toned, muscular, but more lean than thick, so if you like a snug sleeve this is probably not for you. I’m 5’9” 180bs for reference and wear a medium.
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Reviewed in the United States on June 2, 2026
S
Verified Purchase
Suejan
Lake Worth, US
★★★★★ 5
Check the size chart and reviews!
Color: Black, Size: 3X-Large, Color: Black, Size: 3X-Large
Bought this for my husband and if i didnt check the reviews I would ordered it too small. He normally wears a XL in T-shirts but he has very large arms so the 3XL in this fits him comfortably. The material is a bit stretchy so he could have probably taken the 2XL but I am satisfied with how the 3XL looks on him. He looks so good!
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Reviewed in the United States on May 31, 2026
O
Verified Purchase
Owen
Waukegan, US
★★★★★ 1
Size discrepancy
Color: Wine Red, Size: Small
I like the look and feel of this shirt, but I originally bought a medium and it was too big, so I bought a small. Both shirts are the exact same size. It is labeled on the collar as a different size, but it's the same. If anything the small is slightly larger
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Reviewed in the United States on June 5, 2026
I
Verified Purchase
Itsjustmie
Bozeman, US
★★★★★ 5
Boyfriend looks good in them
Color: Black, Size: Medium
Bought these for my boyfriend and he looks amazing in them! They fit his body so well. Quality is nice and soft. Boyfriend ended up getting them in multiple different colors.
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Reviewed in the United States on April 26, 2026
D
Verified Purchase
Dominick B.
Houston, US
★★★★★ 5
Happy with my purchase
Color: Black, Size: X-Large
The material is good quality and it did great in the gentle cycle of my washing machine. I hung it to dry, no dryer. Looks great.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026

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