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JHM High Flow Downpipe Kit

Catted Downpipes with or without X pipe and with or without Integrated Baffling!
JH Motorsports
JH Motorsports
ES#:
4505214
Mfg#:
JHM-B8DPPDK
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JHM High Flow Downpipe Kit

Starting at: $0.00
1599.99
Starting at: $0.00
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on orders $49 and up
This product is lifetime replacement eligible
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High-Flow Cat Downpipes With Integrated Baffle System
To be used with factory exhaust components
*For use with stock diameter exhaust*
4415727 B8DPHFCIBS30T
Availability:
Ships Directly From Supplier
Est. Ship Date:
in 10 Business Days
This product is lifetime replacement eligible Lifetime Replacement
This product is backed by our
Lifetime Replacement Program! Read more here
1169.99
JHM High Flow Cat Downpipes With Integrated Baffle System
To be used with dual 2.5" Cat-back system
*To be used with dual 2.5" system*
4389691 JHM-B8DPHFCIBS25
Availability:
Ships Directly From Supplier
Est. Ship Date:
on Aug 24, 2026
This product is lifetime replacement eligible Lifetime Replacement
This product is backed by our
Lifetime Replacement Program! Read more here
1349.99

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JHM High Flow Cat Downpipes With X-pipe With Integrated Baffle System
To be used with factory exhaust components
*For use with stock diameter exhaust*
4370154 B8DPXHFCIBS30T
Availability:
Ships Directly From Supplier
Est. Ship Date:
in 10 Business Days
This product is lifetime replacement eligible Lifetime Replacement
This product is backed by our
Lifetime Replacement Program! Read more here
1699.99
JHM High Flow Cat Downpipes With X-pipe - Without Integrated Baffle System
To be used with dual 2.5" Cat-back system
*To be used with dual 2.5" system*
4415915 JHM-B8DPXHFC25
Availability:
Ships Directly From Supplier
Est. Ship Date:
in 10 Business Days
This product is lifetime replacement eligible Lifetime Replacement
This product is backed by our
Lifetime Replacement Program! Read more here
1599.99
JHM High Flow Cat Downpipes With X-pipe - With Integrated Baffle System
To be used with dual 2.5" Cat-back system
*To be used with dual 2.5" system*
4370153 B8DPXHFCIBS25
Availability:
Ships Directly From Supplier
Est. Ship Date:
in 10 Business Days
This product is lifetime replacement eligible Lifetime Replacement
This product is backed by our
Lifetime Replacement Program! Read more here
1699.99
I do not want an X-Pipe

Product Details

JH Motorsports is proud to offer the JHM B8 S4-S5 Q5-SQ5 C7 A6-A7 Catted Downpipes with X-pipe featuring the Integrated Baffle System!

Built as a direct OEM replacement, the JHM Catted Downpipes with X-pipe are easy to install with simple hand tools with no cutting or welding required. The X Pipe is designed to increase low-end torque and maximize power throughout the entire RPM band. Moving the Catalytic Converters further downstream into the downpipes, JHM is able to take full advantage of the JHM B8 2.5" Race Pipes and alleviate heat build up close to the engine, increases Catalytic Converter longevity, as well as overall engine performance.

The Integrated Baffle System Version of the JHM HFC Downpipes w/ X-Pipe is for those who are looking for a quieter exhaust system. The baffles have been designed and strategically located in the downpipes to reduce unwanted drone and rasp (Depending on your catback, results may vary).  We used popular exhaust systems for our trials (AWE Touring & Track) along with our JHM Race Pipes and were able to get the interior noise down to just 70db while cruising at 70mph in 6th gear at 2500RPM with the JHM Baffled Downpipes.  That is 10db quieter than the AWE Touring and 15db quieter than the AWE Track systems WITHOUT the JHM Baffled Downpipes installed.  During our testing, at 70db we heard more road/tire noise than exhaust. Note:  The main purpose of the Integrated Baffle System is to combat unwanted drone and take the edge off rasp. 

Features:

  • -JHM High-Flow Cats located further downstream
  • -JHM V-Band Downpipe to X-Pipe Connection for easy install
  • -JHM Integrated Baffle System
  • -Direct OEM Fitment without modification

There is a lot of confusion surrounding the B8 S4-S5 Q5-SQ5 C7 A6-A7 Exhaust System Setup mostly due to the current "brand-x" systems available on the market. The B8 Exhaust can be split up into 5 parts. Starting from the outlet at the cylinder head you have the exhaust manifolds, the cat or test-pipes, the downpipes (this includes the x-pipe on the JHM B8-S4-S5 Q5-SQ5 C7 A6-A7 Full Exhaust System), and the remaining portion that includes the mufflers that exit at the rear of the car (sometimes this entire section is called the cat-back). 

FITMENT: Fits all B8 S4-S5 Q5-SQ5 C7 A6-A7 with 3.0T FSI Engines.

Not for sale or use in the state of California on any pollution-controlled vehicle as per the California Air Resources Board.

This Part Fits the Following Vehicles

Make Model Submodel Engine Special Fitment Notes
Audi B8 S4 Quattro 3.0T Use vehicle selector to confirm fitment
Audi B8 S5 Quattro 3.0T Cabriolet Use vehicle selector to confirm fitment
Audi B8 S5 Quattro 3.0T Coupe Use vehicle selector to confirm fitment
Audi B8 SQ5 Quattro 3.0T Use vehicle selector to confirm fitment
Audi C7 A6 FWD V6 3.0T Use vehicle selector to confirm fitment
Audi C7 A6 Quattro V6 3.0T Use vehicle selector to confirm fitment
Audi Q5 Quattro 3.0T Use vehicle selector to confirm fitment
*The above product applications have been written by ECS Tuning. All warranties, product application, fitment, and performance are the responsibility of ECS Tuning. For additional information see the terms of use.
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