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Flowmaster 17470 American Thunder Cat Back Exhaust System


American Thunder Cat Back Exhaust System 17470 Flowmaster Single - Dual Rear Same Side Exit - w/Dual Cats - Incl. 2.5 in. Tailpipes/70 Series Big Block II Muffler/3 in. Logo Embossed Stainless Tips

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Flowmaster - American Thunder Cat Back Exhaust System P/N 17470 Features:

  • Mandrel Bent 16ga Aluminized Tubing
  • Moderate to Aggressive Exterior Exhaust Tone
  • Includes Hangers And Hardware For Easy Installation
  • Dyno Tuned for Maximum Performance
  • Premium Flowmaster Quality
  • 3 Year Limited Warranty
  • Made in the USA

Product Documents:

View the Full List of Automotive Applications »

Below is an abbreviated list of applications for the American Thunder Cat Back Exhaust System.
C1500 Pickup, K1500 Pickup, Chevrolet, GMC, 1999, 1998, 1997, 1996


At, we proudly offer the complete catalog of Flowmaster Exhaust, with new products being updated all the time. Flowmaster operates the only exhaust Research & Design facilities of its kind in the world, centered around the SuperFlow SF-7100 engine dynamometer complete with E.C.A. (engine cycle analysis) equipment and also SuperFlow chassis dyno's. Flowmaster also utilizes Spectrum Analyzers to fine tune the sound of each of the eleven different series of mufflers that Flowmaster currently offers, both for peak performance and just the right sound levels and tones. Flowmaster's product line includes exhaust products for Performance Street, Muscle cars, Trucks, Street Rods, RV's, Motorhomes, and all types of race applications. Flowmaster's line of muffler are easily categorized to ensure your get the final sound you're looking for. A general rule of thumb, the lower the series, the louder the muffler! The Flowmaster 10 Series mufflers will produce an aggressive, throaty exhaust tone for the street or strip, while their higher series mufflers offer moderate to mild exhaust sound levels to match any taste. Look for aluminized steel and stainless steel options available for most muffler and cat-back exhaust system options. Direct replacement catalytic converters and exhaust headers are also available, boating the same quality and performance as all Flowmaster products. can guide you through your next Flowmaster exhaust purchase with the knowledge and wide array of products for any weekend project. Use our Year, Make, Model search engine to browse vehicle specific header, cat-back or catalytic converter replacements. For Flowmaster mufflers, browse our catalog by muffler series to view all available universal muffler and exhaust tip options.

Shipping Information

  • Item Requires Shipping
  • 74.6 lbs.
  • W11.2500” x H16.2500” x L58.5000”
  • International Shipping Quotes Available

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