JHM High-Flow Cat Downpipes with X-Pipe - Audi B8 4.2L S5

JH Motorsports is proud to offer the JHM B8 S5 Catted Downpipes with X-pipe! 

 NOTE:  This downpipe version is necked down to fit the STOCK/OEM Catback.   If your Aftermarket Catback fits stock downpipes this is the option you will need.  If you have custom 2.5" catback connection, please see our non necked down version.    Just because the system is 2.5"  doesn't mean the connection is. NOTE: AWE Catbacks don't quite line up with factory catback locations so it may require some fitting to fit properly.

NOW SOLD AS A COMBO! 

NOTE: Necks down to stock 4.2L Catback Connection

Built as a direct OEM replacement, our JHM Catted Downpipes with X-pipe are easy to install with simple hand tools with no cutting or welding required. Our 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, we are able to take full advantage of our 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.

Features:

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

 Customer Video:

EXPLANATION OF THE B8 S5  EXHAUST SYSTEM:

There is a lot of confusion surrounding the B8 S5 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-S5 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). See below for a diagram of the JHM B8 S5  Exhaust System:

FITMENT: Fits all B8 S5 4.2L FSI Engines with exhaust systems that bolt to the STOCK downpipes

PROUDLY ENGINEERED AND MANUFACTURED IN THE UNITED STATES OF AMERICA

For shipping quotes: Please sign in or join then put the items you want in your shopping cart and proceed to checkout.

⚠️CALIFORNIA WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov