Flowmaster's race-inspired American Thunder® Extreme Cat-back system is designed to mount behind the factory catalytic converters, or most original style aftermarket H-pipes. The turn-down tailpipes drop at the rear of the transmission and eliminates full length tailpipes to maximize the sound level and allow for extra clearance for wide tires and modified suspensions. These systems are mandrel bent for maximum performance and include Super 44 series mufflers. This American Thunder Extreme system delivers a super aggressive interior and exterior tone and is suited to the enthusiast who wants the most aggressive components they can purchase. Like all Flowmaster systems, the benefits include improved throttle response and power. Designed for an easy fit, these systems include all necessary parts and hardware for easy installation. Notes: Fits coupes and convertibles
| Description_ABR |
SYS 86-04 MU |
| Description_SHO |
SYS 86-04 MUSTANG 4. |
| Description_INV |
86-04 MUSTANG 4.6L/5.0L DUMPS AMT |
| Description_ASC |
Fits 1986-2004 Ford Mustang GT, LX, & Cobra models with 4.6L and 5.0L engines. Fits coupes and convertibles |
| Description_DES |
Flowmaster American Thunder Cat-back Exhaust System |
| Description_EXT |
1986-2004 Ford Mustang GT, LX, & Cobra with 4.6L and 5.0L engines. Fits coupes and convertibles - Aggressive sound |
| Description_MKT |
Flowmaster's race-inspired American Thunder® Extreme Cat-back system is designed to mount behind the factory catalytic converters, or most original style aftermarket H-pipes. The turn-down tailpipes drop at the rear of the transmission and eliminates full length tailpipes to maximize the sound level and allow for extra clearance for wide tires and modified suspensions. These systems are mandrel bent for maximum performance and include Super 44 series mufflers. This American Thunder Extreme system delivers a super aggressive interior and exterior tone and is suited to the enthusiast who wants the most aggressive components they can purchase. Like all Flowmaster systems, the benefits include improved throttle response and power. Designed for an easy fit, these systems include all necessary parts and hardware for easy installation. Notes: Fits coupes and convertibles |
| Description_FAB |
Fits with most modified suspensions |
| Description_FAB |
Stainless Steel Construction |
| Description_FAB |
Delta Flow Technology |
| Description_FAB |
Lifetime limited warranty |
| Description_ABR |
SYS 86-04 MU |
| Description_SHO |
SYS 86-04 MUSTANG 4. |
| Description_INV |
86-04 MUSTANG 4.6L/5.0L DUMPS AMT |
| Description_ASC |
Fits 1986-2004 Ford Mustang GT, LX, & Cobra models with 4.6L and 5.0L engines. Fits coupes and convertibles |
| Description_DES |
Flowmaster American Thunder Cat-back Exhaust System |
| Description_EXT |
1986-2004 Ford Mustang GT, LX, & Cobra with 4.6L and 5.0L engines. Fits coupes and convertibles - Aggressive sound |
| Description_MKT |
Flowmaster's race-inspired American Thunder® Extreme Cat-back system is designed to mount behind the factory catalytic converters, or most original style aftermarket H-pipes. The turn-down tailpipes drop at the rear of the transmission and eliminates full length tailpipes to maximize the sound level and allow for extra clearance for wide tires and modified suspensions. These systems are mandrel bent for maximum performance and include Super 44 series mufflers. This American Thunder Extreme system delivers a super aggressive interior and exterior tone and is suited to the enthusiast who wants the most aggressive components they can purchase. Like all Flowmaster systems, the benefits include improved throttle response and power. Designed for an easy fit, these systems include all necessary parts and hardware for easy installation. Notes: Fits coupes and convertibles |
| Description_FAB |
Fits with most modified suspensions |
| Description_FAB |
Stainless Steel Construction |
| Description_FAB |
Delta Flow Technology |
| Description_FAB |
Lifetime limited warranty |
| Brand |
Flowmaster |
| California Proposition 65 |
Yes |
| California Proposition 65 Chemical Name |
Chromium (hexavalent compounds) |
| California Proposition 65 Chemical Name |
Nickel (Metallic) |
| CARB (California) Compliant |
Yes |
| Catalytic Converter Included |
No |
| 2874 |
0 |
| Category |
Exhaust |
| 3728 |
Flat Band |
| 1882 |
Yes |
| Emission Code |
5 |
| Exhaust Series |
American Thunder |
| 11205 |
Silver |
| 9881 |
No |
| 1161 |
0 |
| Exhaust Tip Quantity |
Sold Separately |
| 9878 |
No |
| 10980 |
Round |
| 9875 |
Single Wall |
| 9870 |
Dual Out Dumps |
| 200 |
Natural |
| 353 |
No |
| 3390 |
Performance |
| 4364 |
Yes |
| Heat Shield Included |
No |
| Inlet Diameter |
2.50 |
| 596 |
Flanged |
| 9871 |
2.50 |
| 92 |
No |
| 11021 |
4.00 |
| 11022 |
13.25 |
| 11023 |
9.50 |
| 11064 |
Chambered |
| 11048 |
4.00 |
| 11049 |
13.25 |
| 11050 |
9.50 |
| 11073 |
Chambered |
| 9884 |
4.00 |
| 1892 |
13.25 |
| 4372 |
409 Stainless Steel |
| 4373 |
Oval |
| Muffler Color |
Black |
| 9882 |
Black High-Temperature Paint Finish |
| 4367 |
Yes |
| 4368 |
No |
| Muffler Included |
Yes |
| 9962 |
Loose Flange |
| 4365 |
2.50 |
| 9963 |
Slip-Fit |
| 4375 |
1 |
| Muffler Part Number |
Kit Only |
| 4374 |
2 |
| Muffler Series |
Super 44 Series |
| 1174 |
Chambered |
| part type |
Exhaust System |
| 3530 |
409 Stainless Steel |
| Product Type |
Exhaust System |
| Sound Level |
Aggressive |
| 4377 |
No |
| Sub Category |
Exhaust and Tail Pipes |
| 4369 |
2.50 |
| 4376 |
2 |
| Tail Pipe Quantity |
Dual |
| 4370 |
No |
| 26 |
Cat-Back |
| 6014 |
No |
| 2126 |
Not Applicable |
| Warning |
California Proposition 65 |
| Pipe Color |
Silver |
| Drive |
2WD |
| 9885 |
9.50 |
| Brand |
Flowmaster |
| California Proposition 65 |
Yes |
| California Proposition 65 Chemical Name |
Chromium (hexavalent compounds) |
| California Proposition 65 Chemical Name |
Nickel (Metallic) |
| CARB (California) Compliant |
Yes |
| Catalytic Converter Included |
No |
| 2874 |
0 |
| Category |
Exhaust |
| 3728 |
Flat Band |
| 1882 |
Yes |
| Emission Code |
5 |
| Exhaust Series |
American Thunder |
| 11205 |
Silver |
| 9881 |
No |
| 1161 |
0 |
| Exhaust Tip Quantity |
Sold Separately |
| 9878 |
No |
| 10980 |
Round |
| 9875 |
Single Wall |
| 9870 |
Dual Out Dumps |
| 200 |
Natural |
| 353 |
No |
| 3390 |
Performance |
| 4364 |
Yes |
| Heat Shield Included |
No |
| Inlet Diameter |
2.50 |
| 596 |
Flanged |
| 9871 |
2.50 |
| 92 |
No |
| 11021 |
4.00 |
| 11022 |
13.25 |
| 11023 |
9.50 |
| 11064 |
Chambered |
| 11048 |
4.00 |
| 11049 |
13.25 |
| 11050 |
9.50 |
| 11073 |
Chambered |
| 9884 |
4.00 |
| 1892 |
13.25 |
| 4372 |
409 Stainless Steel |
| 4373 |
Oval |
| Muffler Color |
Black |
| 9882 |
Black High-Temperature Paint Finish |
| 4367 |
Yes |
| 4368 |
No |
| Muffler Included |
Yes |
| 9962 |
Loose Flange |
| 4365 |
2.50 |
| 9963 |
Slip-Fit |
| 4375 |
1 |
| Muffler Part Number |
Kit Only |
| 4374 |
2 |
| Muffler Series |
Super 44 Series |
| 1174 |
Chambered |
| part type |
Exhaust System |
| 3530 |
409 Stainless Steel |
| Product Type |
Exhaust System |
| Sound Level |
Aggressive |
| 4377 |
No |
| Sub Category |
Exhaust and Tail Pipes |
| 4369 |
2.50 |
| 4376 |
2 |
| Tail Pipe Quantity |
Dual |
| 4370 |
No |
| 26 |
Cat-Back |
| 6014 |
No |
| 2126 |
Not Applicable |
| Warning |
California Proposition 65 |
| Pipe Color |
Silver |
| Drive |
2WD |
| 9885 |
9.50 |
| Year |
Make |
Model |
Submodel |
Notes |
| 1999 |
Ford |
Mustang |
Base |
turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe |
| 2000 |
Ford |
Mustang |
Base |
turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe |
| 2001 |
Ford |
Mustang |
Base |
turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe |
| 2002 |
Ford |
Mustang |
Base |
turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe |
| 2003 |
Ford |
Mustang |
Base |
turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe |
| 1999 |
Ford |
Mustang |
Equipado |
turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe |
| 2000 |
Ford |
Mustang |
Equipado |
turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe |
| 2001 |
Ford |
Mustang |
Equipado |
turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe |
| 2002 |
Ford |
Mustang |
Equipado |
turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe |
| 2003 |
Ford |
Mustang |
Equipado |
turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe |
| 1986 |
Ford |
Mustang |
GT |
turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe |
| 1987 |
Ford |
Mustang |
GT |
turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe |
| 1988 |
Ford |
Mustang |
GT |
turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe |
| 1989 |
Ford |
Mustang |
GT |
turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe |
| 1990 |
Ford |
Mustang |
GT |
turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe |
| 1991 |
Ford |
Mustang |
GT |
turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe |
| 1992 |
Ford |
Mustang |
GT |
turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe |
| 1993 |
Ford |
Mustang |
GT |
turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe |
| 1994 |
Ford |
Mustang |
GT |
turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe |
| 1995 |
Ford |
Mustang |
GT |
turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe |
| 1996 |
Ford |
Mustang |
GT |
turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe |
| 1997 |
Ford |
Mustang |
GT |
turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe |
| 1998 |
Ford |
Mustang |
GT |
turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe |
| 1999 |
Ford |
Mustang |
GT |
turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe |
| 2000 |
Ford |
Mustang |
GT |
turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe |
| 2001 |
Ford |
Mustang |
GT |
turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe |
| 2002 |
Ford |
Mustang |
GT |
turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe |
| 2003 |
Ford |
Mustang |
GT |
turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe |
| 2004 |
Ford |
Mustang |
GT |
turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe |
| 2004 |
Ford |
Mustang |
GT Base |
turn-down tailpipe |
| 2001 |
Ford |
Mustang |
GT Bullitt |
turn-down tailpipe |
| 2004 |
Ford |
Mustang |
GT Equipado |
turn-down tailpipe |
| 1995 |
Ford |
Mustang |
GTS |
turn-down tailpipe |
| 1986 |
Ford |
Mustang |
LX |
turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe |
| 1987 |
Ford |
Mustang |
LX |
turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe |
| 1988 |
Ford |
Mustang |
LX |
turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe |
| 1989 |
Ford |
Mustang |
LX |
turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe |
| 1990 |
Ford |
Mustang |
LX |
turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe |
| 1991 |
Ford |
Mustang |
LX |
turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe |
| 1992 |
Ford |
Mustang |
LX |
turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe |
| 1993 |
Ford |
Mustang |
LX |
turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe,turn-down tailpipe |
| 2003 |
Ford |
Mustang |
Mach 1 |
turn-down tailpipe,turn-down tailpipe |
| 2004 |
Ford |
Mustang |
Mach 1 |
turn-down tailpipe,turn-down tailpipe |
| 1993 |
Ford |
Mustang |
SVT Cobra |
turn-down tailpipe,turn-down tailpipe,turn-down tailpipe |
| 1994 |
Ford |
Mustang |
SVT Cobra |
turn-down tailpipe,turn-down tailpipe,turn-down tailpipe |
| 1995 |
Ford |
Mustang |
SVT Cobra |
turn-down tailpipe,turn-down tailpipe,turn-down tailpipe |
| 2003 |
Ford |
Mustang |
SVT Cobra 10th Anniversary |
turn-down tailpipe |
| 1993 |
Ford |
Mustang |
SVT Cobra R |
turn-down tailpipe |
