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818107 - Flowmaster American Thunder Cat-Back Exhaust System Image
Flowmaster

Flowmaster American Thunder Cat-Back Exhaust System

Part # 818107 Be the first to write a review

Fits 2012-2021 Jeep Grand Cherokee 6.4-liter, American Thunder Cat-Back 3.0-inch Stainless Steel Exhaust System, 4.0-inch Polished Stainless Steel Tips, Dual Out Rear Exit

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Flowmaster American Thunder Cat-Back Exhaust System

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Flowmaster introduces our American Thunder stainless steel cat-back exhaust system for the 2012-2021 Jeep Grand Cherokee with the 6.4-liter Hemi engine. This system uses Super 44 series mufflers and tuned resonators for an aggressive to moderate sound level and increased performance. Mandrel bent 3.00-inch 409 stainless steel tubing allows for maximum exhaust flow and durability. The system uses larger 4.00-inch polished stainless steel tips for a custom look. Max dyno gains of 6 hp and 9 lb-ft at the rear wheels over stock. All of the necessary hardware is included, and factory-mounting locations are used for an easy installation. Backed by Flowmaster's Lifetime Limited Warranty.

Features:

  • Super 44 Series performance mufflers and resonators offer an aggressive to moderate sound level and increased performance
  • 409 stainless steel construction delivers extra durability and improved long-term corrosion resistance
  • Max dyno gains of 6 hp and 9 lb-ft at the wheels
  • 3.00-inch 16-gauge mandrel bent stainless steel tubing helps maintain maximum exhaust flow for better power
  • Includes all necessary hardware for an at home installation
  • 4.00-inch polished stainless steel tips add a custom look to the vehicle
  • Uses factory hanger locations for easy installation
  • Tuned resonators minimize interior sound level for comfort
  • Scavenger X-Pipe increases exhaust pulse velocity and improves torque
Brand Flowmaster
California Proposition 65Yes
CARB (California) CompliantYes
Catalytic Converter IncludedNo
Catalytic Converter Quantity0
CategoryExhaust
Clamps IncludedYes
Emission Code5
Exhaust SeriesAmerican Thunder
Exhaust Tip CutAngle
Exhaust Tip Diameter4.00 IN
Exhaust Tip EdgeRolled
Exhaust Tip FinishPolished
Exhaust Tip Length5.25 IN
Exhaust Tip Material304 Stainless Steel
Exhaust Tip Quantity2
Exhaust Tip ShapeRound
Exit StyleDual Out Rear
FinishNatural
Grade TypePerformance
Hangers IncludedYes
Main Piping Diameter3.00 IN
Mount TypeUses factory hangers
Muffler Body Length13.00 IN
Muffler Body Material409 Stainless Steel
Muffler Body ShapeOval
Muffler ColorBlack
Muffler FinishBlack High-Temperature Paint Finish
Muffler IncludedYes
Muffler Inlet Inside Diameter3.00 IN
Muffler Inlet LocationOffset
Muffler Outlet Diameter3.00 IN
Muffler Outlet LocationOffset
Muffler Overall Length42.10 IN
Muffler Part NumberKit Only
Muffler Quantity2
Muffler SeriesSuper 44
Muffler TypeReflection
part typeExhaust System
Pipe ColorSilver
Pipe Material409 Stainless Steel
Product TypeExhaust System
Sound LevelAggressive / Moderate
Tail Pipe QuantityDual
Tip LogoEmbossed
TypeCat-Back
California Proposition 65 Chemical NameChromium (hexavalent compounds)
Nickel (Metallic)
Part Number818107
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.
Instructions - fm_warranty_general.pdf
Instructions - 818107_instructions.pdf
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