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1999-2005 Mazda Miata NB 1.8l Cat-Back Exhaust SystemYouTube Button


1999-2000 Mazda Miata MX-5 (NB) 1.8L, 1-5/8 inch, 4 into 1, 304SS

PART# BH10309

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$500.00   Suggested Retail
$449.95   Your Price
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WARNING: This product is not street legal and may only be used on Racing Vehicles. Racing Vehicles must be used exclusively for racing or other forms of competition. Racing vehicles must not be registered and must never be used on the street. It is illegal to install this product on a registered vehicle and use it on the street.
For manual transmission only


This 1-5/8 inch long tube header is designed for 1999-2000 Mazda Miata MX-5 (NB) with 1.8L engines. They are hand welded from 18-gauge 304 stainless steel and use a 3/8 inch flange to prevent warping. The precision-engineered tube geometry offers excellent fit, simple installation and maximum performance.


  • Constructed From 18-Gauge, Mandrel Bent, 304 Stainless Steel For Maximum Strength And Durability in Competition / Racing Applications
  • Max Gains of +2 hp and +3 lb/ft torque
  • 3/8 inch Thick, Flanges Are Used For Strength And Maximum Sealing Surface
  • 100% Quality Hand-Welded Construction For Strength, Longevity And Good Looks
  • Tube Geometry Designed For Maximum Clearance And Hassle-Free Installation
  • All Hardware Included
  • Manufacturer’s Limited Lifetime Warranty


Application1999-2000 Mazda Miata MX-5, 1.8L
BrandHooker BlackHeart
Emission Code4
EngineMazda 1.8L
Header StyleLong Tube
Material304 Stainless Steel
Primary Tube Dia.1-5/8 inch
Product TypeHeaders
Race OnlyYes
Sound LevelModerate / Aggressive
Tube Diameter1-5/8 inch
Tubing Diameter (in)1.625
WarrantyLimited Lifetime Warranty
Part NumberBH10309



This part is legal for sale or use on Racing Use Only Vehicles

The following vehicles are considered Racing Use Only Vehicles:

  • Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street

WARNING: It is against the law to install this part on an Emissions Controlled Vehicle

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Warranty Information

Limited Lifetime Warranty: See Details


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