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Flowmaster

Flowmaster American Thunder Cat-back Exhaust System

2011-2018 Chevrolet Silverado 1500, GMC Sierra 1500 with 6.2L engine.

Part # 817602 Be the first to write a review
Estimated shipping date: 02/25/2022
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$903.95
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Delta Flow
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

About Flowmaster

Flowmaster® is a household name, and for good reason. They've built legendary exhaust systems and mufflers for decades, and now offer performance air intakes, catalytic converters, and headers to give your hot rod performance to match the iconic Flowmaster sound.

Brand Flowmaster
Catalytic Converter IncludedNo
Emission Code5
Exhaust SeriesAmerican Thunder
Exit PositionDual Out Rear / Dual Out Side
Heat ShieldNo
Material409 Stainless Steel
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 System
Single DualDual
Sound LevelAggressive / Moderate
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
Tubing Diameter (in)2.5
Tubing Material409S Stainless Steel
UPC700042035038
California Proposition 65 Chemical NameChromium (hexavalent compounds)
Nickel (Metallic)
California Proposition 65 RequiredYes
Part Number817602
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.

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.
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