Skip to content
Pay over 30 days or 3 months with Klarna at checkout 🥳
Pay over 30 days or 3 months with Klarna at checkout 🥳
  Available on stock order. Order today for dispatch in 16 working days.



IE's Y-Pipe Adapter Kit is used to adapt either your IE Downpipe to a stock catback or your IE Catback to a stock downpipe. If you are using either of our exhaust components with a stock counterpart, this Y-Pipe Kit includes everything needed to make it an easy bolt-on solution.

The Integrated Engineering Audi 2.5 TFSI 8V 8S Performance Downpipe (RS3 & TTRS) requires this product, if your vehicle has a stock catback exhaust section.

Cast Construction

Using specialized 3D scanners and software, IE engineers can design odd shapes and sizes to maximize flow and conform into tight spaces without any sacrifices. These shapes can not be manufactured reliably from traditional piping, so we use a high quality stainless steel casting to realize the design. This makes for an incredibly high quality part that will not restrict power and will create a perfect fit every time.


IE downpipe to stock catback exhaust

  • Audi - RS3 2017+ (8V.5) 2.5T
  • Audi - TTRS 2018+ (8S) 2.5T

IE catback exhaust to stock downpipe

  • Audi - RS3 2017+ (8V.5) 2.5T

Fitted Photos


Manufactured by

Integrated Engineering (IE)

Part Number


Useful Information

  • We deliver to every country in the world, if shipping rates are not available at checkout please contact us.
  • Some item(s) are not actively held in stock and usually sell out quickly, please contact sales to perform a stock check if you are unsure.
  • Full tracking is available for all orders, you will receive tracking and dispatch updates via email.
  • It can take up-to 16 working days for out of stock orders to be dispatched.
For more shipping & delivery information, please click here.
We offer fitting on most of our products at our facility in Warrington, Cheshire. Please contact us to get a quote on have us fit your products.
Ultimate Customs Group LTD do not accept any liability if damage is caused to your car by the installation of this product.

Professional installation is recommended on all of our products. Please contact us to see if we offer a fitting service for the item(s) you wish to purchase.