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Flowmaster

Flowmaster American Thunder Cat-Back Exhaust System

Fits 2019-2024 Chevrolet/GMC Silverado/Sierra 2.7-Liter, Cat-Back, Dual Out Rear/Side Exit, Stainless Steel Exhaust System

Part # 818113 Be the first to write a review

Flowmaster American Thunder Cat-Back Exhaust System

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MSRP $1,238.00
$1,002.95
Save $235.05 (18%)
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Emissions

This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

See Emissions Details
This Flowmaster® American Thunder® cat-back exhaust system for the 2019-2024 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.

Features:

  • Dual 2.50-inch mandrel bent 16-gauge 409 stainless steel tubing maximizes exhaust flow and improves durability
  • Dual 3.50-inch polished tips exit dual out the rear or side for a custom look
  • Includes complete hardware and factory styled hangers in the stock locations for an easy installation
  • 50 Series Big Block performance muffler delivers a deep, moderate performance tone and improves exhaust flow
  • Flowmaster’s Lifetime Limited Warranty
  • Gain up to 4 hp and 11 lbs-ft of torque at the rear wheels
  • Fits 147-inch and 157-inch wheelbases
Brand Flowmaster
Emission Code5
Exhaust SeriesAmerican Thunder
Exit PositionDOR/S
Inlet Tubing Diameter3.50
Material409 Stainless Steel
Mount TypeUses factory hangers
Muffler Body Length22 IN
Muffler ColorBlack
Muffler FinishPainted
Muffler Inlet Diameter3.50
Muffler Inlet Locationcentered
Muffler Material409S Stainless Steel
Muffler Outlet Diameter2.50
Muffler Outlet Locationdual outlet
Muffler Overall Length28 IN
Muffler Part NumberKit Only
Muffler Quantity1
Muffler Series50 Series Big Block
Muffler ShapeOval
Muffler TypeReflection
Outlet Tubing Diameter2.50
Product TypeExhaust System
Single DualDual
Sound LevelModerate
System TypeCat-back
Tip CutAngle
Tip Diameter3.50
Tip Edge StyleCut
Tip FinishPolished
Tip Length13
Tip LogoEmbossed
Tip Material304 Stainless
Tip Quantity2.00
Tip ShapeRound
Tip StyleDouble Wall
Tubing Material409S Stainless Steel
UPC090127615539
California Proposition 65 Chemical NameChromium (hexavalent compounds), Nickel (Metallic)
California Proposition 65 RequiredYes
Part Number818113
5

This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.
Instructions - 818113_instructions.pdf
Instructions - fm_warranty_general.pdf
Fits 2019-2024 Chevrolet/GMC Silverado/Sierra trucks with 2.7-liter engines, 2 & 4-wheel drive.

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