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2015-20 Challenger SRT & Hellcat 6.2L, 6.4L - FlowFX Cat-back Exhaust System 717920YouTube Button

Flowmaster FlowFX Cat-Back Exhaust System

2015-2020 Dodge Challenger SRT392, R/T Scat Pack with 6.4L Hemi, Hellcat, Demon with 6.2L Hemi engine and Active Exhaust Valves.

PART# 717920

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Aggressive to moderate sound


Introducing Flowmaster's new FlowFX® Cat-back exhaust system for the 2015-2020 Dodge Challenger models, including Hellcat, with the 6.2L or 6.4L Hemi engine and Factory Active Exhaust Valves. This system is perfect for the person looking for a moderately aggressive exterior and interior sound level with all of the performance benefits that you would expect from Flowmaster®. Features include mandrel bent 3.00-inch stainless steel tubing into the Scavenger Series® X-pipe cross-over for maximum performance and tone, flowing into a pair our new FlowFX "straight-through" mufflers for a deep and powerful sound. The dual 3.00-inch mandrel bent stainless tailpipes retain the Factory Active Exhaust Valves and the system is finished off with aggressive looking quad 3.50-inch black ceramic coated 304s stainless steel tips embossed with the Flowmaster name, putting everyone on notice that you would rather lead than follow. The large quad tips exit within the rear bumper valance and gives your car the look that it should have come with from the factory. This system is designed to use the factory hanger locations, includes all necessary parts, hardware and detailed instructions for a relatively easy at home installation.


  • Scavenger X-pipe for Maximum Power and Deep Tone
  • Includes Factory Style Active Exhaust Valves
  • Stainless Steel FlowFX Perfromance Mufflers
  • Dual 3.00-inch Mandrel-bent Tubing
  • Large Aggressive Looking Quad Tips
  • Uses the Factory Hanger Locations
  • All Stainless Steel Construction
  • Lifetime Limited Warranty
  • Deep Powerful Sound


Emission Code5
Exhaust SeriesFlowFX
Exit PositionDual Out Rear
Heat ShieldNo
Material409 Stainless Steel
Mount TypeUses Factory Hangers
Muffler SeriesFlowFX
Muffler TypeAbsorption
Product TypeExhaust System
Single DualDual
Sound LevelAggressive / Moderate
System TypeCat-back
Tip CutAngle
Tip Diameter3.5
Tip FinishBlack Ceramic
Tip Length9.5
Tip LogoEmbossed
Tip Material304 Stainless
Tip ShapeRound
Tubing Diameter (in)3
Tubing Material409S Stainless Steel
California Proposition 65 Chemical NameChromium (hexavalent compounds)
Nickel (Metallic)
California Proposition 65 RequiredYes
Part Number717920



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 2015-2020 Dodge Challenger SRT392, R/T Scat Pack with 6.4L Hemi, Hellcat, Demon with 6.2L Hemi engine and Active Exhaust Valves.


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