For the person who wants a subtle custom appearance with all the benefits that a Flowmaster® Force II® cat-back exhaust system provides, the S.O.S. (Single out side) systems are the perfect choice. The 3.00-inch mandrel-bent aluminized steel tubing flows into a large case dual inlet 50 Series™ Big Block performance muffler that delivers a deep moderate exterior tone while retaining a mild to moderate interior tone. The 3.00-inch tailpipe uses the factory hanger locations for an easy installation and is finished off with a large 3.50-inch polished 304 stainless steel tip. This system is best suited towards customers looking for efficiency improvements without a lot of noise. Especially recommended for towing applications. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these systems include all necessary parts, hardware and is covered by our 3-year Limited Warranty.
| Brand |
Flowmaster |
| Description_ABR |
SYS 01-03 GM |
| California Proposition 65 |
Yes |
| Description_SHO |
SYS 01-03 GM 1500HD |
| California Proposition 65 Chemical Name |
Chromium (hexavalent compounds) |
| Description_INV |
01-03 GM 1500HD 6.0L CC/SB AMT |
| California Proposition 65 Chemical Name |
Nickel (Metallic) |
| Description_ASC |
Fits 2001-2003 Chevrolet Silverado and GMC Sierra 1500 HD truck with 6.0L engine, fits 2/4 wheel drive models with crew cab/short bed configuration. |
| CARB (California) Compliant |
Yes |
| Description_DES |
Flowmaster American Thunder Cat-back Exhaust System |
| Catalytic Converter Included |
No |
| Description_EXT |
Fits 2001-2003 Chevrolet Silverado, GMC Sierra 1500 HD truck with 6.0L engine. - Moderate sound |
| 2874 |
0 |
| Description_MKT |
For the person who wants a subtle custom appearance with all the benefits that a Flowmaster® Force II® cat-back exhaust system provides, the S.O.S. (Single out side) systems are the perfect choice. The 3.00-inch mandrel-bent aluminized steel tubing flows into a large case dual inlet 50 Series™ Big Block performance muffler that delivers a deep moderate exterior tone while retaining a mild to moderate interior tone. The 3.00-inch tailpipe uses the factory hanger locations for an easy installation and is finished off with a large 3.50-inch polished 304 stainless steel tip. This system is best suited towards customers looking for efficiency improvements without a lot of noise. Especially recommended for towing applications. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these systems include all necessary parts, hardware and is covered by our 3-year Limited Warranty. |
| Category |
Exhaust |
| Description_FAB |
Includes Hangers and Hardware for an Easy Installation |
| 3728 |
Flat Band |
| Description_FAB |
Mandrel-bent 16-gauge Aluminized Steel Tubing |
| 1882 |
Yes |
| Description_FAB |
Large 3.50-inch Polished 304 Stainless Steel Tip |
| Emission Code |
5 |
| Description_FAB |
70 Series Big Block II Performance Muffler |
| Exhaust Series |
American Thunder |
| Description_FAB |
Mild to Moderate Exterior Exhaust Tone |
| 9874 |
Welded |
| Description_FAB |
Dyno Tuned for Maximum Performance |
| 9876 |
Angled |
| Description_FAB |
Includes a 3-year Limited Warranty |
| 1162 |
4.00 |
| Description_FAB |
Uses the Factory Hanger Locations |
| 9877 |
Rolled Edge Angle Cut |
| Description_FAB |
Minimal Interior Sound |
| 1163 |
Polished |
| Description_FAB |
Easy Installation |
| 9881 |
No |
| Description_ABR |
SYS 01-03 GM |
| 10104 |
10.00 |
| Description_SHO |
SYS 01-03 GM 1500HD |
| 1164 |
304 Stainless Steel |
| Description_INV |
01-03 GM 1500HD 6.0L CC/SB AMT |
| 1161 |
1 |
| Description_ASC |
Fits 2001-2003 Chevrolet Silverado and GMC Sierra 1500 HD truck with 6.0L engine, fits 2/4 wheel drive models with crew cab/short bed configuration. |
| 9878 |
No |
| Description_DES |
Flowmaster American Thunder Cat-back Exhaust System |
| 10980 |
Round |
| Description_EXT |
Fits 2001-2003 Chevrolet Silverado, GMC Sierra 1500 HD truck with 6.0L engine. - Moderate sound |
| 9875 |
Single Wall |
| Description_MKT |
For the person who wants a subtle custom appearance with all the benefits that a Flowmaster® Force II® cat-back exhaust system provides, the S.O.S. (Single out side) systems are the perfect choice. The 3.00-inch mandrel-bent aluminized steel tubing flows into a large case dual inlet 50 Series™ Big Block performance muffler that delivers a deep moderate exterior tone while retaining a mild to moderate interior tone. The 3.00-inch tailpipe uses the factory hanger locations for an easy installation and is finished off with a large 3.50-inch polished 304 stainless steel tip. This system is best suited towards customers looking for efficiency improvements without a lot of noise. Especially recommended for towing applications. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these systems include all necessary parts, hardware and is covered by our 3-year Limited Warranty. |
| 9870 |
Single Out Side |
| Description_FAB |
Includes Hangers and Hardware for an Easy Installation |
| 200 |
Aluminized |
| Description_FAB |
Mandrel-bent 16-gauge Aluminized Steel Tubing |
| 353 |
No |
| Description_FAB |
Large 3.50-inch Polished 304 Stainless Steel Tip |
| 3390 |
Performance |
| Description_FAB |
70 Series Big Block II Performance Muffler |
| 4364 |
Yes |
| Description_FAB |
Mild to Moderate Exterior Exhaust Tone |
| Heat Shield Included |
No |
| Description_FAB |
Dyno Tuned for Maximum Performance |
| Inlet Diameter |
3.00 |
| Description_FAB |
Includes a 3-year Limited Warranty |
| 596 |
Clamp-On |
| Description_FAB |
Uses the Factory Hanger Locations |
| 9871 |
3.50 |
| Description_FAB |
Minimal Interior Sound |
| 92 |
No |
| Description_FAB |
Easy Installation |
| 9884 |
5.00 |
| 1892 |
22.00 |
| 4372 |
Aluminized Steel |
| 4373 |
Oval |
| 9882 |
Black High-Temperature Paint Finish |
| 4367 |
No |
| 4368 |
No |
| Muffler Included |
Yes |
| 9962 |
Slip-Fit |
| 4365 |
3.50 |
| Muffler Inlet Location |
Dual |
| 4366 |
3.63 |
| 9963 |
Slip-Fit |
| 4375 |
1 |
| Muffler Part Number |
Kit Only |
| 4374 |
1 |
| Muffler Series |
50 Series Big Block |
| 1174 |
Chambered |
| part type |
Exhaust System |
| 3530 |
Aluminized Steel |
| Product Type |
Exhaust System |
| Sound Level |
Moderate |
| 4377 |
No |
| Sub Category |
Exhaust and Tail Pipes |
| 4369 |
3.50 |
| 4376 |
1 |
| Tail Pipe Quantity |
Single |
| 4370 |
No |
| 26 |
Cat-Back |
| 6014 |
No |
| 2126 |
Not Applicable |
| Warning |
California Proposition 65 |
| Pipe Color |
Silver |
| Drive |
4WD |
| Drive |
2WD |
| 9885 |
12.00 |
| 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 |
| 9874 |
Welded |
| 9876 |
Angled |
| 1162 |
4.00 |
| 9877 |
Rolled Edge Angle Cut |
| 1163 |
Polished |
| 9881 |
No |
| 10104 |
10.00 |
| 1164 |
304 Stainless Steel |
| 1161 |
1 |
| 9878 |
No |
| 10980 |
Round |
| 9875 |
Single Wall |
| 9870 |
Single Out Side |
| 200 |
Aluminized |
| 353 |
No |
| 3390 |
Performance |
| 4364 |
Yes |
| Heat Shield Included |
No |
| Inlet Diameter |
3.00 |
| 596 |
Clamp-On |
| 9871 |
3.50 |
| 92 |
No |
| 9884 |
5.00 |
| 1892 |
22.00 |
| 4372 |
Aluminized Steel |
| 4373 |
Oval |
| 9882 |
Black High-Temperature Paint Finish |
| 4367 |
No |
| 4368 |
No |
| Muffler Included |
Yes |
| 9962 |
Slip-Fit |
| 4365 |
3.50 |
| Muffler Inlet Location |
Dual |
| 4366 |
3.63 |
| 9963 |
Slip-Fit |
| 4375 |
1 |
| Muffler Part Number |
Kit Only |
| 4374 |
1 |
| Muffler Series |
50 Series Big Block |
| 1174 |
Chambered |
| part type |
Exhaust System |
| 3530 |
Aluminized Steel |
| Product Type |
Exhaust System |
| Sound Level |
Moderate |
| 4377 |
No |
| Sub Category |
Exhaust and Tail Pipes |
| 4369 |
3.50 |
| 4376 |
1 |
| Tail Pipe Quantity |
Single |
| 4370 |
No |
| 26 |
Cat-Back |
| 6014 |
No |
| 2126 |
Not Applicable |
| Warning |
California Proposition 65 |
| Pipe Color |
Silver |
| Drive |
4WD |
| Drive |
2WD |
| 9885 |
12.00 |
| Year |
Make |
Model |
Submodel |
Notes |
| 2001 |
Chevrolet |
Silverado 1500 HD |
LS |
Polished Tip Finish, Crew cab/Short bed only,Polished Tip Finish, Crew cab/Short bed only,Polished Tip Finish, Crew cab/Short bed only |
| 2002 |
Chevrolet |
Silverado 1500 HD |
LS |
Polished Tip Finish, Crew cab/Short bed only,Polished Tip Finish, Crew cab/Short bed only,Polished Tip Finish, Crew cab/Short bed only |
| 2003 |
Chevrolet |
Silverado 1500 HD |
LS |
Polished Tip Finish, Crew cab/Short bed only,Polished Tip Finish, Crew cab/Short bed only,Polished Tip Finish, Crew cab/Short bed only |
| 2001 |
Chevrolet |
Silverado 1500 HD |
LT |
Polished Tip Finish, Crew cab/Short bed only,Polished Tip Finish, Crew cab/Short bed only,Polished Tip Finish, Crew cab/Short bed only |
| 2002 |
Chevrolet |
Silverado 1500 HD |
LT |
Polished Tip Finish, Crew cab/Short bed only,Polished Tip Finish, Crew cab/Short bed only,Polished Tip Finish, Crew cab/Short bed only |
| 2003 |
Chevrolet |
Silverado 1500 HD |
LT |
Polished Tip Finish, Crew cab/Short bed only,Polished Tip Finish, Crew cab/Short bed only,Polished Tip Finish, Crew cab/Short bed only |
| 2001 |
GMC |
Sierra 1500 HD |
SLE |
Polished Tip Finish, Crew cab/Short bed only,Polished Tip Finish, Crew cab/Short bed only,Polished Tip Finish, Crew cab/Short bed only |
| 2002 |
GMC |
Sierra 1500 HD |
SLE |
Polished Tip Finish, Crew cab/Short bed only,Polished Tip Finish, Crew cab/Short bed only,Polished Tip Finish, Crew cab/Short bed only |
| 2003 |
GMC |
Sierra 1500 HD |
SLE |
Polished Tip Finish, Crew cab/Short bed only,Polished Tip Finish, Crew cab/Short bed only,Polished Tip Finish, Crew cab/Short bed only |
| 2001 |
GMC |
Sierra 1500 HD |
SLT |
Polished Tip Finish, Crew cab/Short bed only,Polished Tip Finish, Crew cab/Short bed only,Polished Tip Finish, Crew cab/Short bed only |
| 2002 |
GMC |
Sierra 1500 HD |
SLT |
Polished Tip Finish, Crew cab/Short bed only,Polished Tip Finish, Crew cab/Short bed only,Polished Tip Finish, Crew cab/Short bed only |
| 2003 |
GMC |
Sierra 1500 HD |
SLT |
Polished Tip Finish, Crew cab/Short bed only,Polished Tip Finish, Crew cab/Short bed only,Polished Tip Finish, Crew cab/Short bed only |
