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CSP2026

Flowmaster 817891 - American Thunder Cat Back Exhaust System

Flowmaster  |  SKU: FLO-817891
Sale price $1,24995 Regular price $1,40695

PLEASE NOTE: Pictures may be representative of style, rather than the actual product. Read the description for more details.

Description

Flowmaster 817891 - American Thunder Cat Back Exhaust System

Exhaust System - American Thunder - Cat-Back - 2.5 in Diameter - Dual Rear Exit - Dual 4 in Black Ceramic Tips - Stainless - Natural - 6.2 L - GM Fullsize Truck 2019-23 - Kit

American Thunder Cat Back Exhaust System; Dual Out Rear Exit; Incl. 2.5 in. Tubing/Straight Through Mufflers/Round Polished Tips; 409 Stainless Steel;

This Flowmaster American Thunder® cat-back dual exhaust system for the 2019-2023 GM Silverado/Sierra 1500 (new body style) trucks with the 6.2L engine and factory dual exhaust, 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 and factory dual exhaust tailpipes. 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 exhaust 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-inch and 157-inch wheelbases with 6.2L engine and factory dual tailpipes. Only fits models with factory bumper cutouts.

  • Large 4.00-inch Black Ceramic Coated Tips
  • Removes Factory Resonators in Tailpipes
  • Large 50 Series HD Performance Muffler
  • Moderately Aggressive Exterior Tone
  • Black Ceramic Coated Quad Tips
  • Full Stainless Steel Construction
  • Uses Factory Hanger Locations
  • Lifetime Limited Warranty
Brand: Flowmaster
CARB (California) Compliant: Yes
Catalytic Converter Included: No
Catalytic Converter Quantity: 0
Category: Exhaust
Clamping Type: Flat Band
Clamps Included: Yes
Emission Code: 5
Exhaust Series: American Thunder
Exhaust Tip Color: Black
Exhaust Tip Connection: Welded
Exhaust Tip Cut: Angled
Exhaust Tip Diameter: 4.00
Exhaust Tip Edge: Angle Cut
Exhaust Tip Finish: Black Ceramic Coating
Exhaust Tip Intercooled: No
Exhaust Tip Length: 7.50
Exhaust Tip Material: 304 Stainless Steel
Exhaust Tip Quantity: 4
Exhaust Tip Resonated: No
Exhaust Tip Shape: Round
Exhaust Tip Wall: Single Wall
Exit Style: Dual Out Rear
Finish: Natural
Gasket Or Seal Included: No
Grade Type: Performance
Hangers Included: Yes
Inlet Type: Clamp-On
Main Piping Diameter: 2.50
Mount Type: Uses Factory Hangers
Mounting Bracket Included: No
Muffler Body Height: 5.00
Muffler Body Length: 18.00
Muffler Body Material: 409 Stainless Steel
Muffler Body Shape: Oval
Muffler Body Width: 10.00
Muffler Finish: Black High-Temperature Paint Finish
Muffler Flanged Inlet: No
Muffler Flanged Outlet: No
Muffler Included: Yes
Muffler Inlet Connection: Slip-Fit
Muffler Inlet Inside Diameter: 3.50
Muffler Inlet Outside Diameter: 3.63
Muffler Outlet Connection: Slip-Fit
Muffler Outlet Quantity: 2
Muffler Quantity: 1
Muffler Series: 50 Series HD
Muffler Type: Chambered
part type: Exhaust System
Pipe Color: Silver
Pipe Material: 409 Stainless Steel
Product Type: Exhaust System
Sound Level: Aggressive / Moderate
Spring Bolt Kit Included: No
Sub Category: Exhaust and Tail Pipes
Tail Pipe Outlet Outside Diameter: 2.50
Tail Pipe Quantity: 2
Tail Pipe Quantity: Dual
Tail Pipe Tapered Outlet: No
Type: Cat-Back
Valve Included: No
Valve Type: Not Applicable
Warning: California Proposition 65

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