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Description
XForce | 4" to 3" Turbo Downpipe & High-Flow Cat | Audi RS3 8V & TT RS FV | ESRS317KITBXForce 4" to 3" Turbo Downpipe & High Flow Cat Kit Audi RS3 8V & TT RS FV ESRS317KITB Unlock the full potential of your 2. 5L TFSI engine with the XForce Turbo Downpipe kit for the Audi RS3 (8V) and TT RS (FV). This premium upgrade is designed to maximize exhaust flow by replacing the highly restrictive factory component. Crafted from high quality 304 stainless steel, the system features a massive 4" inlet that transitions smoothly into 3" mandrel
XForce 4" to 3" Turbo Downpipe & High-Flow Cat Kit - Audi RS3 8V & TT RS FV - ESRS317KITB
Unlock the full potential of your 2.5L TFSI engine with the XForce Turbo Downpipe kit for the Audi RS3 (8V) and TT RS (FV). This premium upgrade is designed to maximize exhaust flow by replacing the highly restrictive factory component. Crafted from high-quality 304 stainless steel, the system features a massive 4" inlet that transitions smoothly into 3" mandrel-bent tubing. By deleting the secondary catalytic converters and utilizing a 200-cell high-flow metallic race cat, this kit significantly reduces backpressure, resulting in improved throttle response, increased horsepower, and a much more aggressive, visceral exhaust note.
What's in the Box?
- 1x 4" to 3" 304 Stainless Steel Turbo Downpipe
- 1x 200-Cell Metallic High-Flow Race Catalytic Converter
- 1x Secondary Cat Delete Tuning Pipe
- 1x 3" to Twin OEM-Size Adaptor Pipe
- Stainless Steel Flex Bellows (Integrated)
- Full Fitting Kit (Gaskets & Hardware)
Features:
This product offers the following high-performance features:
- Precision Engineering: Features a massive 4" inlet tapering to 3" for optimal exhaust gas velocity and reduced turbo lag.
- High-Flow Metallic Race Cat: Includes a 200-cell metallic substrate catalytic converter designed for maximum flow and durability under high-heat conditions.
- 304 Stainless Steel Construction: Manufactured from non-polished 304-grade stainless steel for superior longevity and corrosion resistance.
- Secondary Cat Delete: Replaces restrictive secondary cats with a tuning pipe to ensure unrestricted power delivery.
- Direct Replacement: Designed as a bolt-on replacement for the factory downpipe; no cutting or welding is required for installation.
- Versatile Adaptability: Supplied with a 3" to twin OEM-size adaptor pipe to allow fitment to both factory and aftermarket exhaust systems.
Specifications:
- Make: Audi
- Model: RS3 (8V) / TT RS (FV)
- Year Range: 2017–Current
- Material: 304 Stainless Steel (Non-Polished)
- Pipe Size: 4" Tapering to 3"
- Cat Type: 200-Cell High-Flow Metallic Race Cat
Important Information
- The image shown may not reflect the actual product
- Shipping times may vary depending on destination and stock availability
- Note: An ECU Tune is highly recommended after installation to maximize performance gains and prevent Check Engine Lights (CEL) due to the cat delete.
Vehicle Applications:
Vehicle Applications for ESRS317KITB
| Make | Model | From | To | Body | Series | Engine | Variant | Drivetrain |
|---|---|---|---|---|---|---|---|---|
| AUDI | ||||||||
| AUDI | RS3 | 2017 | - | Sedan / Sportback | 8V | 2.5L TFSI I5 Turbo | RS3 | Quattro AWD |
| AUDI | TT RS | 2017 | - | Coupe / Roadster | FV (8S) | 2.5L TFSI I5 Turbo | TT RS | Quattro AWD |
Warranty Information
| Product Type | Warranty Period |
|---|---|
| 304 & 201 Stainless Steel Exhaust Systems | 60 Months |
| Accessories | 12 Months |
| Catalytic Converters | 12 Months |
| Electronic Products (Including SmartBox) | 12 Months |
| Mild Steel & 409 Stainless Steel Exhaust Systems | 24 Months |
| Mild Steel Headers | 12 Months |
| Stainless Steel Headers | 24 Months |
| Universal 304 Stainless Steel Mufflers | 24 Months |
| Universal Mild Steel & 409 Stainless Steel Mufflers | 12 Months |
Payment & Security:
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.2 ★★★★★
Based on 16 reviews
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Product Reviews
★★★★★ 5
Great item!
works great. I can plug my backup into it and my printer, so I don't need to connect the printer to the internet.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 28, 2026
★★★★★ 5
74 monte carlo Resto
Model: NewSLS50_52
Great product easy installation with sheets cut to size,using for Classic car Restoration,floor pan and doors
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Reviewed in the United States on May 26, 2026
★★★★★ 5
Impressive Sound Deadening Solution with Enhanced Audio Quality
Model: NewSLS50_52
I recently purchased the Siless 50 mil (1.3mm) 52 sqft Car Sound Deadening mat, and I am delighted with the results it has delivered. Right from the start, I was impressed with the packaging, which ensured the product arrived in perfect condition.
One of the standout features of this sound deadening mat is its ease of use. It was a breeze to cut and modify according to my specific needs. Whether I needed to cover specific areas or customize the size, the mat accommodated my requirements effortlessly. This flexibility made the installation process a breeze.
The Siless Sound Deadening mat has proven to be highly effective in reducing outside noise within my vehicle. With just a half cabin install, I noticed a significant reduction of approximately 10 decibels, making my driving experience much quieter and more comfortable. The mat acted as a reliable barrier against external noise, allowing me to enjoy a more peaceful ride.
Furthermore, the sound quality from my vehicle's audio system experienced a noticeable improvement. The Siless mat effectively dampened vibrations and minimized resonance, resulting in cleaner and more refined audio output. The mat's thickness of 50 mil (1.3mm) ensures optimal sound absorption, contributing to its effectiveness in creating a quieter and more enjoyable driving environment. I can now appreciate the full range of tones and enjoy a more immersive music experience during my drives.
Overall, I highly recommend the Siless 50 mil Car Sound Deadening mat for anyone seeking a reliable and effective solution to reduce noise and enhance audio quality in their vehicle. The easy cutting and modifying process, along with the excellent packaging, contribute to a seamless installation experience. With a significant reduction in outside noise and an improvement in sound system performance, this sound deadening mat has exceeded my expectations.
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Reviewed in the United States on May 27, 2023
★★★★★ 5
Good quality sound deadener at a good price.
Model: NewSLS50_52
Quality sound deadening that adheres to body panels well. You can easily hear the vibration reduction after just the first piece by tapping on the body panel before and after.
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Reviewed in the United States on November 21, 2025
★★★★★ 4
Good stuff at a good price
Model: NewSLS50_52
Works well and sticks well. I used a roller and it has been over a year and everything still sticking as good as day i put it everywhere. I didnt use any adhesive but I did wipe everything down with acetone before I applied. Good stuff at a good price
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Reviewed in the United States on November 23, 2025