For the person who wants the look of a traditional dual exhaust system with all the benefits that a Flowmaster® cat-back exhaust system provides. The American Thunder® exhaust systems are the perfect choice for the person wanting a deep powerful tone outside, with a mild to moderate increase of sound inside the cab. The exhaust system features a dual inlet flange that attaches to the factory flange behind the catalytic converters, all mandrel-bent stainless steel tubing flowing into a Scavenger Series Y-pipe for maximum scavenging of exhaust resulting in increased torque. The system then flows into a 70 Series™ "Big Block II" performance muffler giving you a deep powerful tone outside, and mild to moderate interior tone inside the cab. The dual tailpipes can be configured for either dual out the rear under the bumper for a muscular look, or dual out the sides behind the rear wheels, which is ideal for towing applications. The tailpipes are then finished off with a pair of 3.00-inch polished 304 stainless steel tips. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these systems include all necessary parts and hardware for an easy installation and is covered by our Lifetime Limited Warranty. Note: Fits 2 and 4 wheel drives with the extended cab/shortbed chassis.
| 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 |
| 9874 |
Clamp-On |
| 9876 |
Angled |
| 1162 |
3.00 |
| 9877 |
Rolled Edge Angle Cut |
| 1163 |
Polished |
| 9881 |
No |
| 10104 |
13.00 |
| 1164 |
304 Stainless Steel |
| 1161 |
2 |
| 9878 |
No |
| 10980 |
Round |
| 9875 |
Single Wall |
| 9870 |
Dual Out Side |
| 9870 |
Dual Out Rear |
| 200 |
Natural |
| 353 |
No |
| 3390 |
Performance |
| 4364 |
Yes |
| Heat Shield Included |
No |
| Inlet Diameter |
2.00 |
| 596 |
Flanged |
| 9871 |
2.50 |
| 92 |
Yes |
| 9884 |
5.00 |
| 1892 |
22.25 |
| 4372 |
409 Stainless Steel |
| 4373 |
Oval |
| 9882 |
Black High-Temperature Paint Finish |
| 4367 |
No |
| 4368 |
No |
| Muffler Included |
Yes |
| 9962 |
Slip-Fit |
| 4365 |
3.00 |
| 4366 |
2.50 |
| 9963 |
Slip-Fit |
| 4375 |
2 |
| Muffler Part Number |
Kit Only |
| 4374 |
1 |
| Muffler Series |
70 Series Big Block |
| 1174 |
Chambered |
| part type |
Exhaust System |
| 3530 |
409 Stainless Steel |
| Product Type |
Exhaust System |
| Sound Level |
Moderate |
| 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 |
| Drive |
4WD |
| 9885 |
10.00 |
| 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 |
| 11205 |
Silver |
| 9874 |
Clamp-On |
| 9876 |
Angled |
| 1162 |
3.00 |
| 9877 |
Rolled Edge Angle Cut |
| 1163 |
Polished |
| 9881 |
No |
| 10104 |
13.00 |
| 1164 |
304 Stainless Steel |
| 1161 |
2 |
| 9878 |
No |
| 10980 |
Round |
| 9875 |
Single Wall |
| 9870 |
Dual Out Side |
| 9870 |
Dual Out Rear |
| 200 |
Natural |
| 353 |
No |
| 3390 |
Performance |
| 4364 |
Yes |
| Heat Shield Included |
No |
| Inlet Diameter |
2.00 |
| 596 |
Flanged |
| 9871 |
2.50 |
| 92 |
Yes |
| 9884 |
5.00 |
| 1892 |
22.25 |
| 4372 |
409 Stainless Steel |
| 4373 |
Oval |
| 9882 |
Black High-Temperature Paint Finish |
| 4367 |
No |
| 4368 |
No |
| Muffler Included |
Yes |
| 9962 |
Slip-Fit |
| 4365 |
3.00 |
| 4366 |
2.50 |
| 9963 |
Slip-Fit |
| 4375 |
2 |
| Muffler Part Number |
Kit Only |
| 4374 |
1 |
| Muffler Series |
70 Series Big Block |
| 1174 |
Chambered |
| part type |
Exhaust System |
| 3530 |
409 Stainless Steel |
| Product Type |
Exhaust System |
| Sound Level |
Moderate |
| 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 |
| Drive |
4WD |
| 9885 |
10.00 |
| Description_ABR |
SYS 96-99 GM |
| Description_SHO |
SYS 96-99 GM 1500 EC |
| Description_INV |
96-99 GM 1500 EC/SB 5.7L AMT 409S |
| Description_ASC |
Fits 1996-1999 Chevrolet Silverado, GMC Sierra 1500 trucks with the 5.7L engine using dual catalytic converters, fits extended cab/short bed configuration. |
| Description_DES |
Flowmaster American Thunder Cat-back Exhaust System |
| Description_EXT |
Fits 1996-1999 Chevrolet Silverado, GMC Sierra 1500 trucks with 5.7L engine - Moderate sound |
| Description_MKT |
For the person who wants the look of a traditional dual exhaust system with all the benefits that a Flowmaster® cat-back exhaust system provides. The American Thunder® exhaust systems are the perfect choice for the person wanting a deep powerful tone outside, with a mild to moderate increase of sound inside the cab. The exhaust system features a dual inlet flange that attaches to the factory flange behind the catalytic converters, all mandrel-bent stainless steel tubing flowing into a Scavenger Series Y-pipe for maximum scavenging of exhaust resulting in increased torque. The system then flows into a 70 Series™ "Big Block II" performance muffler giving you a deep powerful tone outside, and mild to moderate interior tone inside the cab. The dual tailpipes can be configured for either dual out the rear under the bumper for a muscular look, or dual out the sides behind the rear wheels, which is ideal for towing applications. The tailpipes are then finished off with a pair of 3.00-inch polished 304 stainless steel tips. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these systems include all necessary parts and hardware for an easy installation and is covered by our Lifetime Limited Warranty. Note: Fits 2 and 4 wheel drives with the extended cab/shortbed chassis. |
| Description_FAB |
Includes Hangers and Hardware for an Easy Installation |
| Description_FAB |
Mandrel-bent 16-gauge Stainless Steel Tubing |
| Description_FAB |
Dual 3.00-inch Polished Stainless Steel Tips |
| Description_FAB |
Connects After Factory Catalytic Converter |
| Description_FAB |
Covered by our Lifetime Limited Warranty |
| Description_FAB |
Deep Powerful Exterior Exhaust Tone |
| Description_FAB |
Uses the Factory Hanger Locations |
| Description_FAB |
70 Series Performance Muffler |
| Description_FAB |
Lifetime Limited Warranty |
| Description_FAB |
Includes all Hardware |
| Description_FAB |
Easy Installation |
| Description_ABR |
SYS 96-99 GM |
| Description_SHO |
SYS 96-99 GM 1500 EC |
| Description_INV |
96-99 GM 1500 EC/SB 5.7L AMT 409S |
| Description_ASC |
Fits 1996-1999 Chevrolet Silverado, GMC Sierra 1500 trucks with the 5.7L engine using dual catalytic converters, fits extended cab/short bed configuration. |
| Description_DES |
Flowmaster American Thunder Cat-back Exhaust System |
| Description_EXT |
Fits 1996-1999 Chevrolet Silverado, GMC Sierra 1500 trucks with 5.7L engine - Moderate sound |
| Description_MKT |
For the person who wants the look of a traditional dual exhaust system with all the benefits that a Flowmaster® cat-back exhaust system provides. The American Thunder® exhaust systems are the perfect choice for the person wanting a deep powerful tone outside, with a mild to moderate increase of sound inside the cab. The exhaust system features a dual inlet flange that attaches to the factory flange behind the catalytic converters, all mandrel-bent stainless steel tubing flowing into a Scavenger Series Y-pipe for maximum scavenging of exhaust resulting in increased torque. The system then flows into a 70 Series™ "Big Block II" performance muffler giving you a deep powerful tone outside, and mild to moderate interior tone inside the cab. The dual tailpipes can be configured for either dual out the rear under the bumper for a muscular look, or dual out the sides behind the rear wheels, which is ideal for towing applications. The tailpipes are then finished off with a pair of 3.00-inch polished 304 stainless steel tips. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these systems include all necessary parts and hardware for an easy installation and is covered by our Lifetime Limited Warranty. Note: Fits 2 and 4 wheel drives with the extended cab/shortbed chassis. |
| Description_FAB |
Includes Hangers and Hardware for an Easy Installation |
| Description_FAB |
Mandrel-bent 16-gauge Stainless Steel Tubing |
| Description_FAB |
Dual 3.00-inch Polished Stainless Steel Tips |
| Description_FAB |
Connects After Factory Catalytic Converter |
| Description_FAB |
Covered by our Lifetime Limited Warranty |
| Description_FAB |
Deep Powerful Exterior Exhaust Tone |
| Description_FAB |
Uses the Factory Hanger Locations |
| Description_FAB |
70 Series Performance Muffler |
| Description_FAB |
Lifetime Limited Warranty |
| Description_FAB |
Includes all Hardware |
| Description_FAB |
Easy Installation |
