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$3,418.92 ~~$3,798.80~~

Stoptech Big Brake Kit | 1998-2009 Audi S4 (83.130.4700.51)

Save 10%

From $2,400.00

D2 Racing Air Struts Kit | 2006-2008 Audi RS4 and 2003-2008 Audi S4 (D-AU-18-ART)

Starting At $1,845.00

AWE Track Cat-Back Exhaust | 2006-2008 Audi S4 Sedan/Avant (3020-43010)

Save 5%

$1,523.99 ~~$1,680.00~~

H&R Street Performance Coilover | Audi Multiple Fitments (hr29250-1)

Save 9%

$1,409.53

Power Stop Front & Rear Autospecialty Brake Kit w/Calipers | 2004-2009 Audi S4 (KCOE4010)

$1,200.00

D2 Racing RS Coilovers | 2003-2008 Audi S4 (D-AU-18)

In Stock

$1,101.59 ~~$1,376.69~~

Supertech Dual Valve Spring Kit | Multiple Audi Fitments (SPRK-AUDI4.2T)

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ARMA Speed Carbon Intake Kit | 2007-2012 Audi S4/S5 B8 (ARMAAUDIS4-A)

$1,080.00

ARMA Speed Carbon Intake Kit | 2007-2012 Audi S4/S5 B8 (ARMAAUDIS4-A)

ACT XACT Streetlite Flywheel | 2004-2008 Audi S4 (600950)

$1,062.00 ~~$1,362.00~~

ACT XACT Streetlite Flywheel | 2004-2008 Audi S4 (600950)

Save 22% In Stock

$983.91

Power Stop Front & Rear Euro-Stop Brake Kit | 2004-2009 Audi S4 (ESK4010)

ACT HD/Race Sprung 6-Pad Clutch Kit | 04-09 Audi S4 / 07-08 RS4 (AA2-HDG6)

$886.00 ~~$1,136.00~~

ACT HD/Race Sprung 6-Pad Clutch Kit | 04-09 Audi S4 / 07-08 RS4 (AA2-HDG6)

Save 22%

ACT HD/Perf Street Sprung Clutch Kit | 04-09 Audi S4 / 07-08 RS4 (AA2-HDSS)

$873.00 ~~$1,119.00~~

ACT HD/Perf Street Sprung Clutch Kit | 04-09 Audi S4 / 07-08 RS4 (AA2-HDSS)

Save 22%

$845.78 ~~$939.75~~

Clutch Masters FX400 Sprung Fiber Clutch Kit | 2005 - 2008 Audi S4 (02050-HDC6)

Save 10%

$845.78 ~~$939.75~~

Clutch Masters FX350 Sprung Fiber Clutch Kit | 2005 - 2016 Audi S4 (02050-HDFF)

Save 10%

ACT HD/Race Rigid 6-Pad Clutch Kit | 04-09 Audi S4 / 07-08 RS4 (AA2-HDR6)

$839.00 ~~$1,075.00~~

ACT HD/Race Rigid 6-Pad Clutch Kit | 04-09 Audi S4 / 07-08 RS4 (AA2-HDR6)

Save 22%

ACT HD/Perf Street Rigid Clutch Kit | 04-09 Audi S4 / 07-08 RS4 (AA2-HDSD)

$824.00 ~~$1,057.00~~

ACT HD/Perf Street Rigid Clutch Kit | 04-09 Audi S4 / 07-08 RS4 (AA2-HDSD)

Save 22%

$819.00

DeatschWerks 750cc Injectors - Set of 8 | 01-09 Audi S4/RS6/S6 4.2L V8 (17U-06-0750-8)

$819.00

DeatschWerks 1000cc Injectors - Set of 8 | 2001-2009 Audi S4/S6/S8 (17U-06-1000-8)

$805.50 ~~$895.00~~

Clutch Masters Steel Flywheel | 2005 - 2008 Audi S4 (FW-050-SF)

Save 10%

$803.25 ~~$892.50~~

Clutch Masters FX250 Dual Friction Sprung Organic/Fiber Clutch Kit | 2005 - 2016 Audi S4 (02050-HD0F)

Save 10%

$749.64

Power Stop Front Autospecialty Brake Kit w/Calipers | 2004-2009 Audi S4 (KCOE2934)

$719.00

DeatschWerks 550cc Injectors - Set of 8 | 2001-2009 Audi S4/RS6/S6 4.2L V8 (21S-06-0550-8)

$689.05

Power Stop Front & Rear Autospecialty Brake Kit | 2004-2009 Audi S4 (KOE4010)

$659.89

Power Stop Rear Autospecialty Brake Kit w/Calipers | 2004-2009 Audi S4 (KCOE4564)

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