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817602 - Flowmaster American Thunder Cat-back Exhaust System - default Image
817602 - Flowmaster American Thunder Cat-back Exhaust System - additional Image
817602 - Flowmaster American Thunder Cat-back Exhaust System - additional Image
817602 - Flowmaster American Thunder Cat-back Exhaust System - additional Image
2011-18 GM Silverado/Sierra 1500 6.2L - American Thunder Cat-back Exhaust System 817602YouTube Button

Flowmaster American Thunder Cat-back Exhaust System

2011-2018 Chevrolet Silverado 1500, GMC Sierra 1500 with 6.2L engine. (See applications below)

PART# 817602

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Fits 2011-2018 Chevrolet Silverado 1500 and GMC Sierra 1500 with 6.2L engine. Fits Crew Cab 5.5-ft bed and extended cab/standard bed models.

Overview

The American Thunder® Cat-back exhaust system for 2011-2018 Chevrolet Silverado and GMC Sierra 1500 trucks with the 6.2L engine, is perfect for the person looking for an aggressive exterior sound level while maintaining a moderate interior tone. This bolt-on stainless steel system features a 3.50-inch mandrel-bent inlet pipe flowing into the 50 Series™ HD performance muffler with large 4.00-inch internals and a built-in tuned resonance chamber to minimize interior drone. The system has dual 2.50-inch mandrel-bent tailpipes which use the factory hanger locations and are finished off with large 3.50-inch polished stainless steel tips. This exhaust system gives you choices for tailpipe exit location either out each side behind the rear tires if you do a lot of towing, or straight-out under the rear bumper for a muscular look. The exhaust system is covered by our Lifetime Limited Warranty and includes all necessary parts and hardware for easy installation you can do at home. Note: Fits 2/4 WD model with Extended Cab standard bed and Double Cab with 5.5-ft bed.

Features:

  • Dyno Tuned For Maximum Performance
  • Uses the Factory Hanger Locations
  • 50 Series HD Performance Muffler
  • Your Choice of Two Tailpipe Exits
  • Clears the Factory Spare Tire
  • Stainless Steel Construction
  • Lifetime Limited Warranty

Specs

BrandFlowmaster
California Proposition 65 Chemical NameChromium (hexavalent compounds)
Nickel (Metallic)
California Proposition 65 RequiredYes
Catalytic Converter IncludedNo
Emission Code5
Exhaust SeriesAmerican Thunder
Exit PositionDOR/S
Heat ShieldNo
Mount TypeUses Factory Hangers
Muffler FinishGray
Muffler Inlet Diameter (in)3.5
Muffler Material409S Stainless Steel
Muffler Outlet Diameter (in)2.5
Muffler Part NumberKit Only
Muffler Quantity1
Muffler Series50 Series HD
Muffler ShapeOval
Muffler TypeWelded Baffle
Product TypeExhaust Systems / Kits
Single DualDual
Sound LevelModerate
System TypeCat-back
Tip CutAngle
Tip Diameter (in)3.5
Tip Edge StyleCut
Tip FinishPolished
Tip Length (in)13
Tip LogoEmbossed
Tip Material304 Stainless
Tip Quantity2
Tip ShapeRound
Tip StyleDouble Wall
Tubing Diameter (in)2.5
Tubing Material409S Stainless Steel
Part Number817602

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.

Tech Resources

Fits 2011-2018 Chevrolet Silverado 1500 and GMC Sierra 1500 with 6.2L engine. Fits Crew Cab 5.5-ft bed and extended cab/standard bed models.

Applications

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