Milltek Non-Resonated Cat-Back Exhaust | Audi B6 S4 - Cerakote Black Tips
SKU: SSXAU872
Parts
- MSAU176: Front Link Pipe Assembly - MSAU176
- MSAU177REP: RH Centre Section Non-Resonated - MSAU177REP
- MSAU178REP: LH Centre Section Non-Resonated - MSAU178REP
- MSAU270: LH Rear Silencer - MSAU270
- MSAU271: RH Rear Silencer - MSAU271
- MSAU314: Brace Bar - MSAU314
- MSTIP273: Jet 100 Cerakote Black Trims - MSTIP273
Documents
Description
The Milltek Non-Resonated Cat-Back Exhaust System is engineered for the Audi B6 S4 4.2 V8 Quattro (Saloon, Sedan, Avant, Cabriolet). This is a direct factory fitment cat-back system-replaces the OEM exhaust from the rear of the secondary catalytic converters back, requiring no vehicle modification.
Hand-finished T304L stainless steel construction with 2.25" (57.15mm) mandrel-bent piping and Jet-100 Cerakote Black trim finishes. The non-resonated design eliminates the OE resonance chamber, delivering a more pronounced full-throttle character while maintaining direct OEM hanger compatibility and ease of installation.
Fitment & Compatibility
- Audi B6 S4 Saloon (2003-2005)
- Audi B6 S4 Sedan (2003-2005)
- Audi B6 S4 Avant (2003-2005)
- Audi B6 S4 Cabriolet (2003-2005)
- 4.2L FSI V8 engine (engine code ASP)
- Replaces OEM cat-back system only-secondary cats remain stock
Designed and manufactured in the UK with 40+ years of performance exhaust heritage. Tested at the Nurburgring.
Key Facts
| Pipe Diameter | 57.15 |
| 2 to 3 hours to fit (including removing OE system) | |
| Race Product | No |
| EMarked | No |
System Fitment List
Shipping Information
This system ships in 1 box.
Similar Products

Milltek Resonated Cat-Back Exhaust | Audi S4 V8 quattro B6
SSXAU875MP
Total
$1813.65
$1469.04
$1813.65
$1469.04

Milltek Resonated Cat-Back Exhaust | Audi B6 A4 V6 S4 V8
SSXAU100MP
Total
$1685.25
$1365.05
$1685.25
$1365.05

Milltek Non-Resonated Cat-Back Exhaust | Audi B6 S4
SSXAU038MP
Total
$1486.23
$1203.85
$1486.23
$1203.85

Milltek Resonated Cat-Back Exhaust | Audi B6 A4 V6 S4 V8
SSXAU100MP
Total
$1685.25
$1365.05
$1685.25
$1365.05
Best Sellers

Milltek Road+ Cat-Back Exhaust | VW Golf MK7.5 GTI
SSXVW470MP
Total
$1735.54
$1405.79
$1735.54
$1405.79

Milltek Race 80mm Cat-Back Exhaust | VW Golf MK8 GTI
SSXVW681MP
Total
$1448.78
$1173.51
$1448.78
$1173.51
MO

Milltek Secondary Catalyst Bypass (Fits to OE System Only) | Porsche Cayenne 958 Turbo 4.8 V8 (Pre-Facelift)
SSXPO182
Total
$492.20
$398.68
$492.20
$398.68
MO

Milltek Valved & Non-Resonated Cat-Back Exhaust | Toyota GR Corolla 1.6T
SSXTY151MP
Total
$4272.51
$3460.73
$4272.51
$3460.73
EC

Milltek OPF/GPF Back Exhaust | Land Rover Defender 130 P300 P400e - Burnt Titanium Tips
SSXLR217
Total
$3710.76
$3005.71
$3710.76
$3005.71

Milltek Secondary Catalyst Bypass (Fits to OE System Only) | Porsche 958 Cayenne S 4.8 V8 (Non-Turbo)
SSXPO204
Total
$492.20
$398.68
$492.20
$398.68

Milltek Secondary Catalyst Bypass Exhaust | Ford Maverick 2.0T AWD
SSXFD547MP
Total
$202.98
$164.41
$202.98
$164.41

Milltek Secondary Cat-Back with Side Exit | Ford Maverick 2.0T AWD
SSXFD545MP
Total
$888.51
$719.69
$888.51
$719.69

Milltek Resonated Cat-Back Exhaust | VW Golf MK7 Alltrack 1.8TSI-Titanium Tips
SSXVW754
Total
$2111.11
$1710.00
$2111.11
$1710.00

Milltek HJS Hi-Flow Sports Cat (w/ Heat Wrap) | Chevrolet C8 Corvette Z06
SSXCH111
Total
$3321.28
$2690.24
$3321.28
$2690.24
