• Flowmaster 19-25 GM 1500 Trucks 2.7T American Thunder Cat-Back Exhaust System
  • Flowmaster 19-25 GM 1500 Trucks 2.7T American Thunder Cat-Back Exhaust System
  • Flowmaster 19-25 GM 1500 Trucks 2.7T American Thunder Cat-Back Exhaust System
  • Flowmaster 19-25 GM 1500 Trucks 2.7T American Thunder Cat-Back Exhaust System
  • Flowmaster 19-25 GM 1500 Trucks 2.7T American Thunder Cat-Back Exhaust System
  • Flowmaster 19-25 GM 1500 Trucks 2.7T American Thunder Cat-Back Exhaust System
  • Flowmaster 19-25 GM 1500 Trucks 2.7T American Thunder Cat-Back Exhaust System
  • Flowmaster 19-25 GM 1500 Trucks 2.7T American Thunder Cat-Back Exhaust System
  • Flowmaster 19-25 GM 1500 Trucks 2.7T American Thunder Cat-Back Exhaust System
  • Flowmaster 19-25 GM 1500 Trucks 2.7T American Thunder Cat-Back Exhaust System
  • Flowmaster 19-25 GM 1500 Trucks 2.7T American Thunder Cat-Back Exhaust System
  • Flowmaster 19-25 GM 1500 Trucks 2.7T American Thunder Cat-Back Exhaust System
  • Flowmaster 19-25 GM 1500 Trucks 2.7T American Thunder Cat-Back Exhaust System
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Flowmaster

Flowmaster 19-25 GM 1500 Trucks 2.7T American Thunder Cat-Back Exhaust System

Flowmaster 19-25 GM 1500 Trucks 2.7T American Thunder Cat-Back Exhaust System

$ 742.95
$ 817.25 $ 742.95
Free shipping on orders over $99 (contiguous U.S.) — flat $10.99 under $99. Shipping details
✓ In Stock • Ships from manufacturer
Ships from Flowmaster — this item ships direct from the manufacturer. It usually goes out quickly, but because it leaves their warehouse rather than ours, delivery can take a little longer than our in-stock parts.

This Flowmaster® American Thunder® cat-back exhaust system for the 2019-2026 Chevrolet/GMC Silverado/Sierra with the 2.7-liter engine is manufactured using durable 409 stainless steel throughout and features dual 2.50-inch mandrel bent pipes for better exhaust gas flow, and an American Thunder muffler is used for a moderate sound level and maximum performance. Gain up to 4 hp and 11 lbs-ft of torque at the rear wheels over stock. This system exits dual out the rear or dual out the side, with dual 3.50-inch polished tips for added style and a custom look. The system uses all the existing factory hanger locations and includes installation instructions and all necessary hardware for an easy installation that you can do at home. Backed by Flowmaster's Lifetime Limited Warranty.

  • Dual 2.50-inch mandrel bent 16-gauge 409 stainless steel tubing maximizes exhaust flow and improves durability
  • 50 Series Big Block performance muffler delivers a deep, moderate performance tone and improves exhaust flow
  • Includes complete hardware and factory styled hangers in the stock locations for an easy installation
  • Dual 3.50-inch polished tips exit dual out the rear or side for a custom look
  • Gain up to 4 hp and 11 lbs-ft of torque at the rear wheels
  • Flowmaster’s Lifetime Limited Warranty
  • Fits 147-inch and 157-inch wheelbases

Vehicle Fitment

  • 2019-2026 Chevrolet Silverado 1500
  • 2019-2026 GMC Sierra 1500
  • 2022 Chevrolet Silverado 1500 LTD
  • 2022 GMC Sierra 1500 Limited

Please verify exact fitment for your trim and engine before ordering.

🚚 Vendor Direct Shipment: This item is not stocked in our warehouse and ships directly from the manufacturer. Please allow additional handling time before dispatch.

Manufacturer Part Number: 818113

Images are for illustrative purposes only. Actual product may vary.

⚠ WARNING (California Proposition 65): This product can expose you to chemicals which are known to the State of California to cause cancer and/or birth defects or other reproductive harm. For more information go to www.p65warnings.ca.gov.

Manufacturer's Warranty — Flowmaster

Flowmaster warranty is tiered by material and product line. Lifetime Limited Warranty — stainless steel mufflers (FlowFX series excepted), all stainless steel exhaust systems (FlowFX included), stainless steel pipes, air intake kits and oiled-type filters (cleaning kits excepted), and other stainless steel exhaust accessories (exhaust tips and racing products excepted); this runs for the life of the original vehicle the part was installed on. Three (3) years — aluminized steel mufflers, exhaust systems and pipes, all exhaust tips, other non-race exhaust accessories, and commercial-vehicle applications of aluminized or stainless products. Two (2) years — Delta Force dry air intake filter elements. One (1) year — FlowFX series mufflers, Elite Series headers, and electronic components such as Delta Boost modules. Catalytic converters sold under the Flowmaster brand are excluded from this warranty. Coverage runs from the date of original purchase, to the original purchaser only, and only while the part remains on the vehicle it was originally installed on. Header coverage does not extend to damage caused by exhaust insulating wrap and is void if the header was fitted to a new or rebuilt engine during the initial break-in period. Sound-absorbing material inside “straight-through” mufflers degrades over time; Flowmaster treats that as normal wear, not a material defect. Also excluded: interior and exterior sound levels, cosmetic issues such as coatings and material discoloration, installation on a racing vehicle, improper installation or installation contrary to Flowmaster instructions, alteration, misuse, repair, accident, collision, undercarriage road impact or debris, and willful or negligent acts. To claim, the original purchaser returns the product either to the original retailer or directly to Flowmaster — a Returned Material Authorization (RMA) number must be obtained from Flowmaster first if returning to them — with proof of purchase showing place, price, product and date. Flowmaster's remedy is exchange for the same part number or refund of the purchase price at its option; installation, labor, towing and shipping costs are not covered.

Warranty terms are set by the manufacturer and may change. Full details and claims are handled directly by Flowmaster. Contact us if you need help with a warranty claim.

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