Audi B9 S4 Quattro 3.0T Performance Exhaust Downpipes

CTS Turbo high flow cat is made to maximize exhaust flow for highest power gains - Do not compromise performance and sound with factory parts - Unleash your B9 S4/S5 3.0T Potential! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:

ES#:

4043052

Mfg#:

CTS-EXH-TP-0009C

$699.99 USD

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Lifetime Replacement

Features a TIG-welded 304 stainless and investment cast body and offers gains up to 45HP & 41TQ affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!

Brand:

ES#:

4473979

Mfg#:

IEEXCK3

$1099.99 USD

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Lifetime Replacement

Offers increased horsepower and torque throughout the powerband, reduced turbocharger lag, improved throttle response, and an enhanced exhaust note affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:

ES#:

4005390

Mfg#:

034-105-4045

$1700.00

This product was last offered at the strikethrough price on
03-08-2026

$1200.00 USD

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Lifetime Replacement

Check-Engine Light free! An emissions-friendly approach to exhaust upgrades! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!

Brand:

ES#:

4708493

Mfg#:

IEEXCK6

$2874.99 USD

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Lifetime Replacement

Featuring HJS Tuning 200cpsi ECE-approved sports cat - Fits with OE and Milltek cat-back systems. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:

ES#:

3508359

Mfg#:

SSXAU725

$5244.99 USD

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Lifetime Replacement

Featuring Milltek Sport Hi-Flow sports cat, fits with OE and Milltek cat-back systems. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:

ES#:

3420821

Mfg#:

SSXAU673

$3374.99 USD

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Lifetime Replacement

Ceramic Coated Sport Cat-Pipe with 200 CPSI Catalytic Converter - Increase power, reduce weight, and improve sound! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:

ES#:

4164586

Mfg#:

AU94S-CDC

T304 Stainless Steel high flow front pipe kit replaces factory secondary catalytic converters affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:

ES#:

3644159

Mfg#:

777512

T304 Stainless Steel front pipe kit includes high flow secondary catalytic converters affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:

ES#:

3644165

Mfg#:

777532

304 Stainless high-flow front metallic catalytic converter/downpipe - 100% handcrafted in Italy! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:

ES#:

3644162

Mfg#:

777521

Sport Cat-Pipe with 200 CPSI Catalytic Converter - Increase power, reduce weight, and improve sound! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:

ES#:

4164584

Mfg#:

AU94S-CD