817654
This American Thunder exhaust system is specifically designed for 1967-1972 Chevrolet and GMC C10 and C15 1/2 ton 2wd trucks with coil spring suspension. The system is perfect for the person looking for a moderate to aggressive interior and exterior sound level. Starting at the crossmember-back, the exhaust comes complete with a built-in H-pipe crossover, all mandrel-bent 2.50-inch stainless steel tubing, a pair of Super 44 Series performance mufflers, and your choice of four tailpipe exits. One set slightly angled down to clear larger rear bumpers, one set straight out the back under the rear bumper, out the sides behind the rear tires for that classic truck look or a dump style exiting behind the rear tires level with the body. The system includes all hardware necessary for installation and provides adequate clearance for substantially lowered vehicles. The exhaust system is covered by our Lifetime Limited Warranty. If you prefer Aluminized steel construction, check out system #17654 which comes with our 3-year Limited Warranty. Fits both short and long wheelbase trucks.
Features:
- Super 44 Series Mufflers for Deep Powerful Sound
- Includes Hangers and Hardware for Installation
- Crossmember-back True Dual Exhaust System
- Mandrel-bent 16-gauge Stainless Steel Tubing
- Aggressive to Moderate Exterior Exhaust Tone
- H-pipe Crossover for Maximum Power
- Four Choices of Tailpipe Exits
- Lifetime Limited Warranty
About Flowmaster

Flowmaster® is a household name, and for good reason. They've built legendary exhaust systems and mufflers for decades, and now offer performance air intakes, catalytic converters, and headers to give your hot rod performance to match the iconic Flowmaster sound.
SPECS
2WD/4WD | RWD |
---|---|
Brand | Flowmaster |
Emission Code | 5 |
Exhaust Series | American Thunder |
Exit Position | Dual Out Rear / Dual Out Side |
Heat Shield | No |
Inlet Diameter (in) | 2.5 |
Material | 409 Stainless Steel |
Muffler Part Number | Kit Only |
Muffler Quantity | 2 |
Muffler Series | Super 44 Series |
Outlet Diameter (in) | 2.5 |
Product Type | Exhaust System |
Single Dual | Dual |
Sound Level | Aggressive / Moderate |
System Type | Crossmember-back |
Tip Quantity | Not Included |
Truck Bed Length | Long Bed |
Short Bed | |
Tube Diameter | 2.5 inch |
Tubing Diameter (in) | 2.5 |
Type of Exhaust | Crossmember-back |
UPC | 700042029877 |
California Proposition 65 Chemical Name | Chromium (hexavalent compounds) |
Nickel (Metallic) | |
California Proposition 65 Required | Yes |
Part Number | 817654 |
EMISSIONS
5
This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.
TECH RESOURCES
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