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Flowmaster American Thunder Cat-back Exhaust System for Chevrolet and GMC

Part # 817933

  • Mandrel-bent 16-gauge Tubing for Maximum Exhaust Flow
  • Uses the Factory Hanger Locations for Easy Installation
  • 50 Series HD Muffler with Delta Flow Technology
  • 409 Stainless Steel Construction for Long Life
  • Increased Performance and Exhaust Flow
  • Multiple Tailpipe Exits Provided in Kit
  • Large 3.00-inch Dual Tailpipes
  • Deep Powerful Exterior Sound
  • Lifetime Limited Warranty
  • Flowmaster Quality

Description

The Flowmaster® American Thunder® Cat-back exhaust system for the 2020-2026 Chevy Silverado and GMC Sierra 2500HD and 3500HD trucks with the 6.6L gas engine, has a moderate to aggressive sound level inside and outside of the truck, with all of the performance benefits you expect from Flowmaster®. Designed for the Crew Cab, Standard Bed (6.5 ft.) models only, this bolt-on, emissions-legal system features a stainless steel 50 Series HD™ muffler and large dual 3.00-inch 409 stainless steel mandrel-bent tailpipes that can be configured to exit either dual straight out the back, or dual out the sides behind the rear wheels which is best suited for towing applications. The system is finished off with a pair of large 4.00-inch polished 304 stainless steel tips and is covered by our Lifetime Limited Warranty. Designed for an easy fit, this system includes all necessary parts and hardware for installation.

Specifications

CARB (California) CompliantYes
Catalytic Converter IncludedNo
Catalytic Converter Quantity0
Clamping TypeFlat Band
Clamps IncludedYes
Exhaust SeriesAmerican Thunder
Exhaust Tip ColorSilver
Exhaust Tip ConnectionClamp-On
Exhaust Tip CutAngled
Exhaust Tip Diameter4.00 in
Exhaust Tip EdgeAngle Cut
Exhaust Tip FinishPolished
Exhaust Tip IntercooledNo
Exhaust Tip Length13.00 in
Exhaust Tip Material304 Stainless Steel
Exhaust Tip Quantity2
Exhaust Tip ResonatedNo
Exhaust Tip ShapeRound
Exhaust Tip WallDouble Wall
Exit StyleDual Out Side
FinishNatural
Gasket Or Seal IncludedNo
Grade TypePerformance
Hangers IncludedYes
Heat Shield IncludedNo
Inlet TypeFlanged
Main Piping Diameter3.00 in
UPC / GTIN00700042039760
WarrantyManufacturer's Limited Lifetime Warranty

Fits these vehicles

YearMakeModelSubmodelEngineNote
2020 - 2022ChevroletSilverado 2500 HDCustom, High Country, LT, LTZ, WT6.6L V8Polished Tip Finish
2023ChevroletSilverado 2500 HDCustom, High Country, LT, LTZ, WT6.6L V8Polished Tip Finish, FITS CREW CAB, 6.5-FOOT BED TRUCKS ONLY
2024 - 2026ChevroletSilverado 2500 HDCustom, High Country, LT, LTZ, WT, ZR26.6L V8Polished Tip Finish, FITS CREW CAB, 6.5-FOOT BED TRUCKS ONLY
2021ChevroletSilverado 3500 HDHigh Country, LT, LTZ, WT6.6L V8Polished Tip Finish
2022ChevroletSilverado 3500 HDBase, High Country, LT, LTZ, WT6.6L V8Polished Tip Finish
2023ChevroletSilverado 3500 HDBase, High Country, LT, LTZ, WT6.6L V8Polished Tip Finish, FITS CREW CAB, 6.5-FOOT BED TRUCKS ONLY
2024 - 2026ChevroletSilverado 3500 HDHigh Country, LT, LTZ, WT6.6L V8Polished Tip Finish, FITS CREW CAB, 6.5-FOOT BED TRUCKS ONLY
2020GMCSierra 2500 HDAT4, Base, Denali, SLE, SLT6.6L V8Polished Tip Finish
2022GMCSierra 2500 HDAT4, Denali, SLE, SLT6.6L V8Polished Tip Finish
2023GMCSierra 2500 HDAT4, Denali, Pro, SLE, SLT6.6L V8Polished Tip Finish, FITS CREW CAB, 6.5-FOOT BED TRUCKS ONLY
2024 - 2026GMCSierra 2500 HDAT4, AT4X, Denali, Pro, SLE, SLT6.6L V8Polished Tip Finish, FITS CREW CAB, 6.5-FOOT BED TRUCKS ONLY
2021GMCSierra 3500 HDAT4, Base, Denali, SLE, SLT6.6L V8Polished Tip Finish
2022GMCSierra 3500 HDAT4, Denali, SLE, SLT6.6L V8Polished Tip Finish
2023 - 2026GMCSierra 3500 HDAT4, Denali, Pro, SLE, SLT6.6L V8Polished Tip Finish, FITS CREW CAB, 6.5-FOOT BED TRUCKS ONLY