Audi - S Series - S4 - B9 S4 (2018-present)

AWE Tuning

AWE Tuning 3010-42054 Cat-back Quad Tip Track Exhaust Audi B9 S4

$2,115.79

AWE Tuning

AWE Tuning 3010-42056 Cat-back Quad Tip Touring Exhaust Audi B9 S4

As low as $2,768.42

AWE Tuning

AWE Tuning 3010-43054 Cat-back Quad Tip Touring Exhaust Audi B9 S4

$2,678.95 $2,545.00

Milltek Sport

Milltek SSXAU640 Cat-back Exhaust Audi B9 S4 and S5 Sportback (Non Sport Diff Models)

$3,283.00

Milltek SSXAU641 Catback Quad Tip Valved Street Exhaust Audi B9 S4 Non-Sport Diff

Milltek Sport

Milltek SSXAU641 Cat-back Quad Tip Valved Street Exhaust Audi B9 S4 and S5 Non-Sport Diff

$3,283.00

Milltek Sport

Milltek SSXAU642 Cat-back Quad Tip Valved Street Exhaust Audi B9 S4 and S5 Non-Sport Diff

$3,663.00

Milltek Sport

Milltek SSXAU643 Cat-back Exhaust Audi B9 S4 and S5 Sportback (Non Sport Diff Models)

$4,063.00

Milltek Sport

Milltek SSXAU644 Cat-back Exhaust Audi B9 S4 and S5 Sportback (Non Sport Diff Models)

$3,291.00

Milltek Sport

Milltek SSXAU645 Cat-back Exhaust Audi B9 S4 and S5 Sportback (Non Sport Diff Models)

$3,503.00

Milltek Sport

Milltek SSXAU646 Cat-back Exhaust Audi B9 S4 and S5 Sportback (Non Sport Diff Models)

$3,823.00

Milltek Sport

Milltek SSXAU647 Cat-back Exhaust Audi B9 S4 and S5 Sportback (Non Sport Diff Models)

$4,063.00

Milltek Sport

Milltek SSXAU648 Cat-back Exhaust Audi B9 S4 and S5 Sportback (Non Sport Diff Models)

$3,463.00

Milltek Sport

Milltek SSXAU649 Cat-back Exhaust Audi B9 S4 and S5 Sportback (Non Sport Diff Models)

$3,703.00

Milltek Sport

Milltek SSXAU650 Cat-back Exhaust Audi B9 S4 and S5 Sportback (Non Sport Diff Models)

$3,075.00

Milltek Sport

Milltek SSXAU651 Cat-back Quad Tip Valved Race Exhaust Audi B9 S4 and S5 Non-Sport Diff

$3,075.00

Milltek Sport

Milltek SSXAU652 Cat-back Quad Tip Valved Race Exhaust Audi B9 S4 and S5 Non-Sport Diff

$3,455.00

Milltek Sport

Milltek SSXAU653 Cat-back Exhaust Audi B9 S4 and S5 Sportback (Non Sport Diff Models)

$3,855.00

Milltek Sport

Milltek SSXAU654 Cat-back Exhaust Audi B9 S4 and S5 Sportback (Non Sport Diff Models)

$3,855.00

Subscribe to the Achtuning newsletter! E-mails are not shared with 3rd parties

Account

Log in

New Customer

Forgot Password

Forgot Password