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Flowmaster American Thunder Exhaust Systems 17149

Exhaust System, American Thunder, Header-Back, Aluminized Steel, H-Pipe, Chevy, Pontiac, Kit

Estimated USA Ship Date: Loading...Processing Monday 2/25/2019
Estimated International Date: Loading...Processing Today (if shipped by air)
INTERNATIONAL Customer Options

  • Order this item and get free shipping and handling! Oversize fees also waived on this item. Valid on orders shipped in the contiguous United States. Applicable shipping fees will be charged, if required, on additional items added to the order.

Hazardous Material Warning
WARNING: This product can expose you to chemicals including nickel (metallic) and chromium (hexavalent compounds) which are known to the State of California to cause cancer and birth defects, or other reproductive harm For more information, visit

Brand: Flowmaster

Manufacturer's Part Number: 17149

Part Type: Exhaust Systems

Product Line: Flowmaster American Thunder Exhaust Systems

Summit Racing Part Number: FLO-17149

UPC: 700042016662

System Material: Steel

System Style: Header-back

Exit Location: Split rear

System Finish: Aluminized

Catalytic Converter(s) Included: No

Intermediate Pipe Diameter (in): 2.500 in.

Muffler Included: Yes

Muffler Quantity: Two

Muffler Configuration: Single inlet/Single outlet

Muffler Style: Chambered

Exhaust Type: Dual

Hardware Included: Yes

Inlet Quantity: Two

Tailpipe Diameter (in): 2.500 in.

Tip Included: Yes

Tip Outlet Size: 2.500 in.

Tip Quantity: Dual

Tip Shape: Round

Tip Cut: Slant

Tip Edge Style: Non-rolled edge, single-wall

Tip Material: 304 stainless steel

Tip Finish: Polished

Quantity: Sold as a kit.

Notes: Kit includes H-pipe. Due to variations in different manufacturers headers, modifications to the length and or angles of the intermediate pipes may be required when connecting to the header collectors.

In-Store Pickup: Choose In-store pick-up (OH, NV, GA, TX) on our web site.

Flowmaster American Thunder exhaust systems are designed with the latest exhaust technology available--resulting in improved acceleration, passing power, and fuel mileage. A key to these performance upgrades is Flowmaster's use of mandrel-bent tubing, which allows superior exhaust gas flow. The systems also feature mufflers (single or dual) that deliver plenty of the rich Flowmaster sound you expect. Components are built from stainless steel or aluminized steel; and some models include tips. American Thunder exhausts are available in more than a hundred configurations for fitment on specific truck and car applications.


Questions & Answers Ask a Product Question

What is the case length for mufflers in this system?
Thanks, Todd.

Asked by TODD on December 04, 2017


Thanks for the question Todd. The case length for this muffler is 17". Thanks, Flowmaster

Flowmaster Flowmaster Answer - December 11, 2017

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What series muffler is included in this Flowmaster American Thunder exhaust kit?

Asked by NICHOLAS on May 15, 2017


Thank you for your question. Flowmaster 17149 uses 50 Series Delta Flow mufflers that are 3 chamber mufflers.

Summit RacingSummit Racing Answer - June 12, 2017

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Are the flow master mufflers 2 chamber or 3 chamber
Thank you

Alex Hatzoglidis

Asked by ALEX on May 02, 2017


Thank you for your question. Flowmaster 17149 uses 50 Series Delta Flow mufflers that are 3 chamber mufflers.

Summit RacingSummit Racing Answer - May 24, 2017

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+See All Questions (3)

Some parts are not legal for use in California or other states with similar laws / regulations

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