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817602 - Cat-Back System 409S - DOR/S - American Thunder - Moderate Sound - default Image
817602 - Cat-Back System 409S - DOR/S - American Thunder - Moderate Sound - additional Image
817602 - Cat-Back System 409S - DOR/S - American Thunder - Moderate Sound - additional Image
817602 - Cat-Back System 409S - DOR/S - American Thunder - Moderate Sound - additional Image
2011-18 GM Silverado/Sierra 1500 6.2L - American Thunder Cat-back Exhaust System 817602YouTube Button

Cat-Back System 409S - DOR/S - American Thunder - Moderate Sound

American Thunder Kit

PART# 817602

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2011-2018 Chevrolet Silverado 1500 and GMC Sierra 1500 Crew Cab and Double Cab models with 6.2L V8 gas engine.

Overview

Flowmaster's American Thunder Cat-back exhaust system for the 2011-2018 Chevrolet/GMC Silverado/Sierra 1500 pickups with the 6.2L V8 engine is perfect for the person looking for an aggressive exterior sound level while maintaining a moderate interior sound with all of the performance benefits that you would expect from Flowmaster. This bolt on 409S stainless steel system features a 3.50 inch inlet pipe assembly that runs into a 50 HD Series muffler. The systems uses 2.50 inch mandrel bent tailpipes for maximum performance and then is finished off with 3.50 inch polished stainless steel tips with embossed Flowmaster logos. This dual exit system can be exited out each side or straight out under the rear bumper. The exhaust system is covered by Flowmaster's Lifetime Limited Warranty. Designed for an easy fit, this system includes all necessary parts and hardware for installation.

Features:

  • Flowmaster Reliability
  • Patented Delta Flow Technology
  • Dyno Tuned For Maximum Performance
  • Stainless Steel Construction

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

2011-2018 Chevrolet Silverado 1500 and GMC Sierra 1500 Crew Cab and Double Cab models with 6.2L V8 gas engine.

Applications

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