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Description
STI PERFORMANCE MUFFLER (Low back pressure) For SUBARU WRX STI (VA) ST44300VV030Brand STI Product PERFORMANCE MUFFLER (Low back pressure) Product Number ST44300VV030 Description This high performance muffler boasts low back pressure, an approximately 16% lower airflow resistance, and a weight reduction of approximately 1. 9 kg compared to the standard models. While complying with the safety standards and Type 1 after market muffler performance tests, this muffler increases acceleration performance by approximately 2%, and makes
| Brand | STI |
| Product | PERFORMANCE MUFFLER (Low back pressure) |
| Product Number | ST44300VV030 |
| Description | This high-performance muffler boasts low back pressure, an approximately 16% lower airflow resistance, and a weight reduction of approximately 1.9 kg compared to the standard models. While complying with the safety standards and Type 1 after-market muffler performance tests, this muffler increases acceleration performance by approximately 2%, and makes the engine more responsive to the operation of the accelerator. This gives the driver of the performance-oriented SUBARU WRX model a sense of integration with the vehicle. In addition, the exhaust sound is tuned specifically to a sporty feel and high-quality sound that fits the character of SUBARU WRX. |
| Compatible Vehicle | SUBARU WRX STI (VA) |
| Compatible Models | Applicable Models are followed by 'o' mark: A 2014 year 08 May to 2015 May STI (AWD / 6MT) ___ STI with a large spoiler (AWD / 6MT) ___ STI Type-S with a large spoiler (AWD / 6MT) ___ Applicable Models are followed by 'o' mark: B 2015 year 06 January to 2016 May STI (AWD / 6MT) ___ STI ASP (AWD / 6MT) ___ S207 (AWD / 6MT) - S207 ASP (AWD / 6MT) - with STI large spoiler (AWD / 6MT) ___ STI ASP with a large spoiler (AWD / 6MT) ___ STI Type-S with a large spoiler (AWD / 6MT) ___ STI Type-S with ASP large spoiler (AWD / 6MT) ___ Applicable Models are followed by 'o' mark: C 05 May 2016 06 Jan-2017 STI (AWD / 6MT) ___ STI ASP (AWD / 6MT) ___ with STI large spoiler (AWD / 6MT) ___ STI with ASP large spoiler (AWD / 6MT) ___ STI Type-S with a large spoiler (AWD / 6MT) ___ STI Type-S with ASP large spoiler (AWD / 6MT) ___ Applicable Models are followed by 'o' mark: D 2017 Jun ~ WRX STI (AWD / 6MT) ___ WRX STI ASP (AWD / 6MT) ___ WRX with STI large spoiler (AWD / 6MT) ___ WRX STI with ASP large spoiler (AWD / 6MT) ___ WRX STI Type-S 19 inch tire (AWD / 6MT) ___ WRX STIType-S ASP 19 inch tire (AWD / 6MT) ___ WRX STI Type-S 19 inch flat tire with a large spoiler (AWD / 6MT) ___ WRX STI Type-S ASP large spoiler 19 inches with tire (AWD / 6MT) ___ |
| Remarks | * It meets safety standards and aftermarket noise regulations. * Two gaskets (SUBARU genuine Part No. 44011SG010) and four self-locking nuts (SUBARU genuine Part No. 902330011) are required separately. * This product can not be installed along with the SUBARU genuine exhaust finisher. * The explanation of this product is for Japanese specification. |
| Notes | Images are for illustration purpose only. Actual product may vary. |
Shipping Notes
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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 22 reviews
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Product Reviews
★★★★★ 5
Great sound mat for the price!
Style: 50 mil 50 SqFt, Style: 50 mil 50 SqFt
This is a good product. Many people go with KILMAT because of the value to price point. I did as well. When you clean the surface (in my case it was all painted metal) this stuff sticks very well. I do recommend you use a seam roller of some type, I used Lumiteco 3 piece roller set. This will help with adhesion and mostly flatten the overlapped edges. It also helps you see where you have rolled as it leaves little grooves. The difference when we had no sound mats and after was very impressive. We haven't finished our install yet and it is quieter than when we had an interior in the van. There are thicker mats available in other brands, but this will work great for our van build, but this helps keep the weight down. It is quality material, just be careful when you are removing the backing, the edge of the foil face can cut you. I suggest you layout where you are installing the mat and cut to fit. From what I have read, you don't need to cover every inch in the vehicle, just spot install for a big difference. I chose to cover most surfaces to help keep sound out when we are sleeping in the van. We haven't finished putting the van yet, but we have driven it around and been very satisfied with this product.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 3, 2025
★★★★★ 5
Excellent sound deadening mats
Style: 80 mil 36 sqft, Style: 80 mil 36 sqft
Purchased these for a 2020 Lexus RX350 due to the hollow sound of the car doors when shutting. They sounded cheap. The mats are super sticky and I applied them when the doors were hot from sitting in the sun. They alubutyl sticks like crazy and the end result was perfect. Now I have solid sounding doors. Good quality product.
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Reviewed in the United States on May 20, 2026
★★★★★ 5
Awesome product 👌
Style: 50 mil 50 SqFt, Style: 50 mil 50 SqFt
I love this stuff. I use it alot.
Sticks great
Easy to use
Molds super easy
Really helps with sound. Great product.
I wish I could get sponsored for this product on my projects..
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 30, 2026
★★★★★ 5
Good product at a good price
Style: 80 mil 36 sqft
This product works great and easy to install.
I do two or more vehicles a month.
I switch to this brand a year ago and would recommend to everyone of my customers
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Reviewed in the United States on April 16, 2026
★★★★★ 4
Good deal for the price
Style: 80 mil 18 SqFt
The product is good and contrary to some comments I read it was not a mess to install and went on very nicely. That said I placed on a 71 Baracudda and starting from a 71db I was able to drop that down to about 66 with two layers Kilmatt 80mil
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 18, 2026
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