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  • B6-S4 FI CAT BACK EXHAUST

    $1,299.00$1,319.00

    Fast Intentions is proud to present our B6 S4 Cat Back Exhaust System. This Cat Back exhaust system is the premier upgrade for all S4 owners looking to maximize the performance from their 4.2L FSI V8 engine. Our exhaust system will enhance the sound that Audi created from the factory by making it smoother, deeper,…

  • B7-S4 FI CAT BACK EXHAUST

    $1,449.00$1,479.00

    Fast Intentions is proud to present our B7 S4 Cat Back Exhaust System. This Cat Back exhaust system is the premier upgrade for all S4 owners looking to maximize the performance from their 4.2L FSI V8 engine. Our exhaust system will enhance the sound that Audi created from the factory by making it smoother, deeper,…

  • B7-S4 25TH ANNIVERSARY FI CAT BACK EXHAUST

    $1,299.00$1,319.00

    Fast Intentions is proud to present our B7 S4 25th Anniversary Cat Back Exhaust System. This Cat Back exhaust system is the premier upgrade for all S4 owners looking to maximize the performance from their 4.2L FSI V8 engine. Our exhaust system will enhance the sound that Audi created from the factory by making it…