Flowmaster American Thunder Crossmember-Back Exhaust System for Chevrolet and GMC
Part # 817940
- Crossmember-Back Design Works with Stock Manifolds or Headers, Allowing More Application Options
- 16-Gauge, 2.50-Inch 409 Stainless Steel Pipes add Durability and Strength
- Super 44 Mufflers Deliver Increased Performance and an Aggressive to Moderate Sound Level
- Three Different Tailpipe Exit Options Allow You to Tailor the Look of the Kit to Your Style
- Mandrel-Bent Pipes Help to Maximize the Exhaust Flow for Better Performance
- H-Pipe Style Crossover Helps Exhaust Gas Scavenging and Reduces Drone
- Includes Hangers and Hardware for Installation
- Lifetime Limited Warranty
Description
This Flowmaster American Thunder dual exhaust system is specifically designed for 1967-1972 Chevrolet and GMC K10, K15/K1500, K20, and K25/K2500 4wd trucks with V8 engines. The system is perfect for the person looking for an aggressive to moderate interior and exterior sound level. Starting at the Crossmember-Back, the exhaust comes complete with a built-in H-pipe crossover for better exhaust scavenging, all mandrel-bent 2.50-inch stainless steel tubing, a pair of Super 44 Series performance mufflers, and your choice of three tailpipe exits (Turndown behind rear tires, side exit behind rear tires, or straight out the back under the bumper). The system includes all hardware necessary for installation and is covered by our Lifetime Limited Warranty. Fits both short and long wheelbase trucks.
Specifications
| CARB (California) Compliant | Yes |
|---|---|
| Catalytic Converter Included | No |
| Catalytic Converter Quantity | 0 |
| Clamping Type | Flat Band |
| Clamps Included | Yes |
| Exhaust Series | American Thunder |
| Exhaust Tip Quantity | 0 |
| Exhaust Tip Shape | Round |
| Exit Style | Dual Out Side |
| Finish | Natural |
| Gasket Or Seal Included | No |
| Grade Type | Performance |
| Hangers Included | Yes |
| Heat Shield Included | No |
| Inlet Type | Weld-On |
| Main Piping Diameter | 2.50 in |
| Mount Type | Uses New Hangers (Included) |
| Mounting Bracket Included | Yes |
| Muffler (Left) Body Height | 4.00 in |
| Muffler (Left) Body Length | 13.25 in |
| Muffler (Left) Body Width | 9.50 in |
| Muffler (Left) Type | Chambered |
| Muffler (Right) Body Height | 4.00 in |
| Muffler (Right) Body Length | 13.25 in |
| Muffler (Right) Body Width | 9.50 in |
| Muffler (Right) Type | Chambered |
| Muffler Body Height | 4.00 in |
| UPC / GTIN | 00090127117200 |
| Warranty | Manufacturer's Limited Lifetime Warranty |
| Year | Make | Model | Submodel | Engine | Note |
|---|---|---|---|---|---|
| 1967 | Chevrolet | K10 Pickup | Base | 4.6L V8, 5.3L V8 | Aggressive to Moderate sound; Super 44 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes. |
| 1968 | Chevrolet | K10 Pickup | Base | 5.0L V8, 5.3L V8, 5.4L V8, 6.5L V8 | Aggressive to Moderate sound; Super 44 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes. |
| 1969 | Chevrolet | K10 Pickup | Base | 5.0L V8, 5.3L V8, 5.7L V8, 6.5L V8 | Aggressive to Moderate sound; Super 44 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes. |
| 1970 - 1972 | Chevrolet | K10 Pickup | Base | 5.0L V8, 5.7L V8, 6.6L V8 | Aggressive to Moderate sound; Super 44 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes. |
| 1967 | Chevrolet | K20 Pickup | Base | 4.6L V8, 5.3L V8 | Aggressive to Moderate sound; Super 44 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes. |
| 1968 | Chevrolet | K20 Pickup | Base | 5.0L V8, 5.3L V8, 5.4L V8, 6.5L V8 | Aggressive to Moderate sound; Super 44 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes. |
| 1969 | Chevrolet | K20 Pickup | Base | 5.0L V8, 5.3L V8, 5.7L V8, 6.5L V8 | Aggressive to Moderate sound; Super 44 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes. |
| 1970 - 1972 | Chevrolet | K20 Pickup | Base | 5.0L V8, 5.7L V8, 6.6L V8 | Aggressive to Moderate sound; Super 44 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes. |
| 1967 | GMC | K15/K1500 Pickup | Base | 4.6L V8, 5.3L V8 | Aggressive to Moderate sound; Super 44 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes. |
| 1968 | GMC | K15/K1500 Pickup | Base | 5.0L V8, 5.3L V8, 5.4L V8, 6.5L V8 | Aggressive to Moderate sound; Super 44 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes. |
| 1969 | GMC | K15/K1500 Pickup | Base | 5.0L V8, 5.7L V8, 6.5L V8 | Aggressive to Moderate sound; Super 44 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes. |
| 1970 - 1972 | GMC | K15/K1500 Pickup | Base | 5.0L V8, 5.7L V8, 6.6L V8 | Aggressive to Moderate sound; Super 44 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes. |
| 1967 | GMC | K25/K2500 Pickup | Base | 4.6L V8, 5.3L V8 | Aggressive to Moderate sound; Super 44 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes. |
| 1968 | GMC | K25/K2500 Pickup | Base | 5.0L V8, 5.3L V8, 5.4L V8, 6.5L V8 | Aggressive to Moderate sound; Super 44 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes. |
| 1969 | GMC | K25/K2500 Pickup | Base | 5.0L V8, 5.7L V8, 6.5L V8 | Aggressive to Moderate sound; Super 44 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes. |
| 1970 - 1972 | GMC | K25/K2500 Pickup | Base | 5.0L V8, 5.7L V8, 6.6L V8 | Aggressive to Moderate sound; Super 44 Series Performance Mufflers; 2.50-inch Stainless Steel Pipes. |
