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Flowmaster dBX Cat-back Exhaust System

1990-1997 Mazda Miata with 1.6L or 1.8L engine.

PART# 819110

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Moderate sound


The Flowmaster® dBX® Cat-back exhaust system for these classic Miatas includes 2.25-inch mandrel-bent stainless steel tubing with a full length mid-pipe that follows the factory routing from the catalytic converter back to the muffler. The mid-pipe also includes an O2 senSingle Rear Exit fitting in the OEM position to ensure proper engine operation and emission compliance. The 304 stainless steel dBX Series muffler features Flowmaster Laminar Flow™ technology and connects to a single 2.25-inch tailpipe which sends exhaust through the cutout in the rear valence. This system is intended as a Spec Miata system, therefore no tip is included but one can be easily added. All necessary parts and hardware are included for a great fitting and simple installation. Like most dBX series systems, it will typically produces a moderate interior and exterior performance sound level and is covered by our Lifetime Limited Warranty.


  • Includes Hangers and Hardware for an Easy Installation
  • Mandrel-bent 16 Gauge Stainless Steel Tubing
  • Connects After Factory Catalytic Converter
  • Exclusive Laminar Flow Technology
  • Uses the Factory Hanger Locations
  • Moderate Exterior Exhaust Tone
  • Lifetime Limited Warranty
  • dBX Performance Muffler
  • Flowmaster Quality


Emission Code5
Exhaust SeriesdBX Series
Exit PositionSingle Rear Exit
Heat ShieldNo
Inlet Diameter (in)2.25
Material409 Stainless Steel
Muffler Part Number12414310
Muffler Quantity1
Muffler SeriesdBX Series
Outlet Diameter (in)2.25
Product TypeExhaust System
Single DualSingle
Sound LevelModerate
System TypeCat-back
Tip Diameter (in)2.25
Tip Quantity1
Tubing Diameter (in)2.25
California Proposition 65 Chemical NameChromium (hexavalent compounds)
Nickel (Metallic)
California Proposition 65 RequiredYes
Part Number819110



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.

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