GMC Sierra 3500HD Performance Exhaust - Rear - Flowmaster - American Thunder Cat-Back - Polished - `01-`07

GMC Sierra 3500HD Performance Exhaust - Rear - Flowmaster - American Thunder Cat-Back - Polished - `01-`07

GMC Sierra 3500HD Performance Exhaust - Rear - Flowmaster - American Thunder Cat-Back - Polished - `01-`07
GMC Sierra 3500HD Performance Exhaust - Rear - Flowmaster - American Thunder Cat-Back - Polished - `01-`07
GMC Sierra 3500HD Performance Exhaust - Rear - Flowmaster - American Thunder Cat-Back - Polished - `01-`07
GMC Sierra 3500HD Performance Exhaust - Rear - Flowmaster - American Thunder Cat-Back - Polished - `01-`07
GMC Sierra 3500HD Performance Exhaust - Rear - Flowmaster - American Thunder Cat-Back - Polished - `01-`07
GMC Sierra 3500HD Performance Exhaust - Rear - Flowmaster - American Thunder Cat-Back - Polished - `01-`07
GMC Sierra 3500HD Performance Exhaust - Rear - Flowmaster - American Thunder Cat-Back - Polished - `01-`07
GMC Sierra 3500HD Performance Exhaust - Rear - Flowmaster - American Thunder Cat-Back - Polished - `01-`07
GMC Sierra 3500HD Performance Exhaust - Rear - Flowmaster - American Thunder Cat-Back - Polished - `01-`07
GMC Sierra 3500HD Performance Exhaust - Rear - Flowmaster - American Thunder Cat-Back - Polished - `01-`07
GMC Sierra 3500HD Performance Exhaust - Rear - Flowmaster - American Thunder Cat-Back - Polished - `01-`07
GMC Sierra 3500HD Performance Exhaust - Rear - Flowmaster - American Thunder Cat-Back - Polished - `01-`07
GMC Sierra 3500HD Performance Exhaust - Rear - Flowmaster - American Thunder Cat-Back - Polished - `01-`07
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GMC Sierra 3500HD Performance Exhaust - Rear - Flowmaster - American Thunder Cat-Back - Polished - `01-`07 free shipping

GMC Sierra 3500HD Performance Exhaust – Flowmaster American Thunder Cat-Back (Polished), 2001–2007 Classic. A rear-exit, bolt-on upgrade with a deep, confident tone.

Designed for 6.0L or 8.1L models with the factory dual-inlet muffler layout, this system connects after the catalytic converters and uses a 50 Series Big Block muffler for a moderate interior note and powerful exterior sound. A mandrel-bent 3.5 in. aluminized steel tailpipe exits behind the right rear wheel—towing friendly—and ends with a 4 in. polished 304 stainless tip stamped with the Flowmaster logo. Includes a formed aluminum heat shield with stainless clamps, factory-location hangers, hardware, and instructions for an easy fit. Backed by a 3-year limited warranty.

Features

  • Fits 2001–2006 (2007 Classic) GMC Sierra 3500HD, 6.0L/8.1L
  • American Thunder: moderate inside, deep outside
  • 50 Series Big Block muffler; dyno-tuned
  • 3.5 in. mandrel-bent aluminized tailpipe
  • 4 in. polished 304 stainless tip
  • Uses factory hangers; hardware included

Questions or need expert guidance? Call us. We offer installation and customization at our Austin, Texas and Los Angeles, California locations: TX 512-982-9393, CA 562-981-6800.

Buying multiple items? Contact us about shipping discounts. We install on premises at both locations.

Disclaimer: Some images in our product listings that are provided by the manufacturer/ supplier are for illustration purposes only and may not be an exact representation of the item. The product listing details are accurate for the item offered. Please refer to the product description for precise specification and as always do not be hesitant to reach out to us with any questions.



CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

About Manufacturer

Manufacturer of performance exhaust systems, mufflers, performance air intakes, catalytic converters, race mufflers, headers, and numerous exhaust accessories for late model cars, trucks, off-road, Jeeps, SUVs, classic muscle cars, powersports vehicles, and more. Flowmaster® gives you lots of exhaust choices with 12 designs of chambered mufflers, 3 styles of our exclusive “laminar-flow” mufflers, and a new line of FlowFX “straight-through” performance mufflers, along with 4 sound categories of exhaust systems, giving you the customer, the power to custom tailor the sound of your vehicle whether you prefer mild, moderate or aggressive tones and sound levels. Since 1983, Flowmaster is the company you can trust and has led the industry in offering only the best products you can buy for your vehicles.


Flowmaster History


41 years ago, Flowmaster® mufflers were conceived to solve a growing problem with sound issues at race tracks in California and beyond. In his successful effort to quiet race cars without reducing performance, our founder refused to accept the status quo of the day and instead pushed exhaust technology beyond common thinking. This led to many firsts in automotive exhaust science and many patents protecting the various technologies used in Flowmaster® products. With those developments, Flowmaster ushered in a revolution in automotive performance exhaust.

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Two locations to serve you

AUSTIN, TX

22108 SH 71 W.
Spicewood, TX 78669
512-982-9393
Mon-Fri: 9 AM - 6PM CST
Sat-Sun: Closed

LOS ANGELES, CA

2716 Dawson Ave.
Signal Hill, CA 90755
562-981-6800
Mon-Fri: 9 AM - 6PM PST
Sat-Sun: Closed
This location is open by appointment only
and is not open to the general public.