SKU: 4585732500

XForce | 4" to 3" Turbo Downpipe & High-Flow Cat | Audi RS3 8V & TT RS FV | ESRS317KITB

Sale price$546.75 Regular price$607.50
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Ships within 48 hours · Estimated delivery Jul 20 - Jul 25

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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:
  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: 4585732500

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4.4 ★★★★★
Based on 9 reviews
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Verified Purchase
Elizabeth Henderson
Pawtucket, US
★★★★★ 4
Very narrow
Size: 10 Wide, Color: Cognac
Run narrow. For very narrow feet. Wide width fits like a regular width.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 9, 2026
M
Verified Purchase
Mynx
Battle Creek, US
★★★★★ 5
Comfortable Shoes Right Out of the Box
Size: 9, Color: Black
I bought these shoes for my husband. He has a very hard time finding quality, comfortable shoes. These shoes are just as comfortable as his New Balance. He uses them as a dress shoe and wears them at least once a week. There was no break in period necessary. They were comfortable right out of the box! The only thing we didn't like was the white sole color. Once I knew he was going to keep them, I used a black sharpie marker to color the soles black. Instant amazing, comfortable dress shoes. They were well worth the cost. If you or your SO needs a comfortable pair of shoes, we highly recommend them.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 2, 2025
R
Verified Purchase
Rmanuel
Phoenix, US
★★★★★ 1
Paid for new, received used.
Size: 9.5 Wide, Color: Cognac, Size: 9.5 Wide, Color: Cognac
Arrived dirty as if someone whore it for more than a few days. Maybe I was mistaken, but I saw nothing about “previously used” on the Amazon page. Returned it. I would suggest that the company use quality control when it comes to shipping. The shoes seem find otherwise. I ordered 9.5 and it was just a bit tight. If I reorder I will go for size 10.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 11, 2026
F
Verified Purchase
Fletch
San Leandro, US
★★★★★ 5
Overall Great.
Size: 10.5 Wide, Color: Black
Great product. Great value. Great style. Overall great.
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Reviewed in the United States on March 3, 2026
B
Verified Purchase
B.J. G
Boise, US
★★★★★ 3
Decent Shoes with Misleading Description (Not Leather)
Size: 12 Wide, Color: Black, Size: 12 Wide, Color: Black
I only look for leather when I’m purchasing dress shoes. Under the description “details” on this item it lists the shoe as leather upper and inner lining. A photo shows “genuine Napa leather lining”. If you keep reading (which I have now that I’ve received the shoes) it shows “faux leather” in the small print and that is not “leather”. I run a small leather business and this irks me because it’s clearly false advertising. The details also show the product is made in Brazil but when they arrived today, the shoe tag shows “Made in China” and “Man Made upper and lower”. I don’t hate the shoes. They look nice. What I know is they won’t hold up over time like leather, which is why the description should be accurate and not misleading.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 28, 2026

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