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817891 - Flowmaster American Thunder Cat-back Exhaust System - default Image
817891 - Flowmaster American Thunder Cat-back Exhaust System - additional Image
817891 - Flowmaster American Thunder Cat-back Exhaust System - additional Image
817891 - Flowmaster American Thunder Cat-back Exhaust System - additional Image
817891 - Flowmaster American Thunder Cat-back Exhaust System - additional Image
817891 - Flowmaster American Thunder Cat-back Exhaust System - additional Image
2019 GM Silverado/Sierra 1500 6.2L - American Thunder Cat-back Exhaust 817891YouTube Button

Flowmaster American Thunder Cat-back Exhaust System

2019 Chevrolet Silverado, GMC Sierra 1500 with 6.2L engines.

PART# 817891

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Fits 2019 Chevrolet Silverado 1500 and GMC Sierra 1500 Crew Cab and Double Cab models with 6.2L engine.

Overview

Flowmaster's American Thunder cat-back dual exhaust system for the 2019 GM Silverado/Sierra 1500 (new body style) trucks with the 6.2L engine is perfect for the person looking for an aggressive sound level outside the truck, with a moderate interior tone and all the performance benefits you would expect from Flowmaster. This emissions-legal bolt-on system fits all 6.2L Crew Cab with 5.5-ft and 6.5-ft beds, and all Double Cab with a 6.5-ft bed with factory dual exhaust. Features include a mandrel-bent 3.50-inch stainless steel inlet tube flowing into a single 50 Series HD muffler, dual 2.50-inch mandrel-bent stainless tailpipes replacing the factory resonators and giving your truck some growl. The tailpipes are finished off with quad 4.00-inch black ceramic coated stainless steel tips that exit in place of the factory bolt-on trim bezels giving your truck an aggressive performance style and setting your truck apart from others, sending the message that you would rather lead than follow. Designed for an easy fit, this system includes all necessary parts, detailed instructions and hardware for an easy at home installation. Notes: Fits 147" and 157" wheelbases with 6.2L and Factory Dual Exhaust.

Features:

  • Moderately Aggressive Exterior Tone
  • Black Ceramic Coated Quad Tips
  • Uses Factory Hanger Locations
  • Stainless Steel Construction
  • Removes Resonators

Specs

BrandFlowmaster
Emission Code5
Exhaust SeriesAmerican Thunder
Exit PositionDOR
Mount TypeUses Factory Hangers
Muffler Series50 Series HD
Product TypeCat-Back Exhaust
Single DualDual
Sound LevelModerate/Aggressive
Tip FinishPolished
Tip Material304 Stainless
Tubing Diameter (in)2.5
Tubing Material409S Stainless Steel
Part Number817891

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 2019 Chevrolet Silverado 1500 and GMC Sierra 1500 Crew Cab and Double Cab models with 6.2L engine.

Applications

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