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    Fast Intentions is proud to present our B8 S4 Lead Pipes & X-Pipe.

    This Cat Back exhaust system is the premier upgrade for all S4 owners looking to maximize the performance from their 3.0L TFSI V6 engine. Our Lead Pipes & X-Pipe will enhance the sound that Audi created from the factory by making it smoother, deeper, and louder.

    Built as a direct OEM replacement, our Lead Pipes & X-Pipe are easy to install with simple hand tools; no cutting or welding required. Our X Pipe is designed to increase low end torque and maximize power throughout the entire RPM band. The exhaust system is unobtrusive at idle and cruising speeds; but comes to life at wide open throttle.


    • Direct OEM replacement: no cutting or welding required.
    • 2.5″ T-304 mandrel bent stainless steel tubing.
    • All flange connection points are precision Tig welded around the outside.  The inside is sanded down and port-n-polished for a smooth exhaust flow.  This process reduces exhaust turbulence at the flange connection points.
    • Neck down (stock) connection size will allow fitment with the OEM Audi S5 exhaust system.
    • Neck down (stock) connection size will not allow fitment with the Fast Intentions B8 S4 Mid-Pipe & Rear Section.
    • Limited 3-year warranty on all welds and craftsmanship.
    • Application Specific: 2010-2016 Audi S4
    • All installation hardware included.
    • Hand built in the USA.


    • Improved exhaust flow and throttle response.
    • Refining the factory exhaust note by increasing depth and volume.
    • Reduction in EGT’s (Exhaust Gas Temperature) by freeing up back pressure.


    • This product is hand built (in house) to order with a standard lead time of 2 – 4 weeks. Once your order is placed, you will receive an invoice with your estimated shipping date. Note: The lead time may fluctuate less than 2 or greater than 4 weeks based on order volume.
    • California customers are subject to sales tax.
    • Customers outside the continental U.S. are subject to additional shipping charges.
    • Image(s) shown may not reflect actual product.
    Connection Size