Engineered Performance for Audi, VW, Porsche & Skoda

APR's B6 & B7 S4 Exhaust is offered as both a full or as a catback system. The catback system is a complete stainless steel, mandrel bent, cat-back exhaust. The exhaust is a dual 2.25" system that begins at the factory downpipes and continues to an innovative centre muffler. The exhaust then splits and each mandrel bent pipes goes to its own muffler with a 3.5" (90mm) bevel-cut, round tip.
 
This exhaust is very quiet and simply changes the tone of the exhaust to a deep, unobtrusive sound. With TIG welding, fully stainless construction, and CNC'ed hangers, you will not find a higher quality system on the market.
 
A set of downpipes is also available for the 6spd only. This system replaces the 4-cat factory setup with a pair of metal matrix catalysts. APR downpipes will only fit with an APR catback system. In testing, a full APR exhaust produces gains of 19kw and 47nm across most of the engine powerband. Throttle response is also greatly improved.
 

Cat-Back System
Year	Engine	Transmission	Drivetrain	Part Number	Price
2004	4.2	ALL	Quattro	CB100017	$1995
2005	4.2	ALL	Quattro	CB100017	$1995
2006	4.2	ALL	Quattro	CB100031	$1995
2007	4.2	ALL	Quattro	CB100031	$1995

Downpipes
Year	Engine	Transmission	Drivetrain	Part Number	Price
2004	4.2	6spd	Quattro	CD100008	$1995
2005	4.2	6spd	Quattro	CD100008	$1995
2006	4.2	6spd	Quattro	CD100008	$1995
2007	4.2	6spd	Quattro	CD100008	$1995
2004	4.2	6spd	Quattro	CD100016	$1995
2005	4.2	6spd	Quattro	CD100016	$1995
2006	4.2	6spd	Quattro	CD100016	$1995
2007	4.2	6spd	Quattro	CD100016	$1995

Full System
Year	Engine	Transmission	Drivetrain	Part Number	Price
2004	4.2	6spd	Quattro	FE100012	$3750
2005	4.2	6spd	Quattro	FE100012	$3750
2006	4.2	6spd	Quattro	FE100033	$3750
2007	4.2	6spd	Quattro	FE100033	$3750
2004	4.2	6spd	Quattro	FE100032	$3750
2005	4.2	6spd	Quattro	FE100032	$3750
2006	4.2	6spd	Quattro	FE100034	$3750
2007	4.2	6spd	Quattro	FE100034	$3750

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