GMC Sierra Performance Exhaust - Flowmaster - American Thunder Cat-Back - `01-`03
GMC Sierra Performance Exhaust - Flowmaster - American Thunder Cat-Back - `01-`03

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GMC Sierra Performance Exhaust - Flowmaster American Thunder Cat-Back (2001-2003). A single-side-exit system delivering a deep tone and crisp response for 1500 HD 6.0L trucks.
Built from 3.00-inch mandrel-bent aluminized steel, this cat-back uses a tuned performance muffler for a moderate exterior note with minimal interior resonance. The tailpipe mounts to factory hangers for easy installation and ends with a large 3.50-inch polished 304 stainless tip. Kit includes required hardware and carries a 3-year limited warranty.
Features
- American Thunder cat-back, single side exit
- 3.00-inch mandrel-bent aluminized steel tubing
- Large 3.50-inch polished 304 stainless steel tip
- Moderate exterior sound; minimal interior resonance
- Uses factory hanger locations; hardware included
- Dyno-tuned for strong throttle response
- Fits 2001-2003 GMC Sierra 1500 HD 6.0L crew cab/short bed, 2WD or 4WD; also fits Chevrolet Silverado 1500 HD same config
Have questions or planning a build? Call our Austin, TX shop at 512-982-9393 or our Los Angeles area shop at 562-981-6800. We offer professional installation and customization at both locations.
Considering multiple items? Contact us for shipping discounts. We install on premises at both locations.
CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov



