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1990 - 1997 NA
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Miata O2 Sensor, Catalytic Converter & Emissions Mk1 Miata Exhaust Systems & Components Mk1
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RSpeed Mazda Miata MX-5 02 Sensor
RSpeed Miata DYI Oxygen Sensor For 1994 - 2005 Front or Rear
List Price: $89.95
Our Price: $29.00
You save $60.95!

Universal 02 Sensor for All NA and NB Miata's

RSpeed Miata Oxygen Sensor for 90-93 1.6 Direct Fit
List Price: $139.95
Our Price: $59.00
You save $80.95!

Replacement Oxygen Sensor for 90-93 Miatas.
Replaces:
1990-1993 1.6 Front [Non-California]: Mazda Part# B61R-18-861A-9U
RSpeed Mazda Miata MX-5 Race Header Extension Kit
RSpeed Miata Oxygen Sensor Race Header Extension Kit 1994 - 2005
List Price: $139.95
Our Price: $80.00
You save $59.95!

Race Header Extension Kit
RSpeed: Miata MX-5 1990 - 2005 FRONT o2 Sensor
RSpeed Miata O2 Sensor FRONT 1.8L 1994 - 2005 Miata
List Price: $222.95
Our Price: $90.00
You save $132.95!

Rspeed Front Oxygen Sensor Bank 1 for 1990 - 2005 Mazda Miatas.

RSpeed: Miata MX-5 1990 - 2005 REAR o2 Sensor
RSpeed Miata O2 Sensor Rear 1.8L 1994 - 2005 Miata
List Price: $222.90
Our Price: $90.00
You save $132.90!

Rspeed Front Oxygen Sensor Bank 1 for 1990-2005 Mazda Miatas.

Miata MX-5 Hi-Flow Catalytic Converter 1990-1993
Mazda Miata MX-5 Hi-Flow Catalytic Converter 90-93
List Price: $199.95
Our Price: $159.00
You save $40.95!

Miata Hi Flow Catalytic Converter 90-93
RSpeed: Bosal Catalytic Converter Miata 1990 - 1993
Bosal High Flow Catalytic Converter Miata 1990 - 1993 1.6L
List Price: $239.95
Our Price: $189.00
You save $50.95!

Bosal high flow catalytic converter features stainless steel body and a bright mirror finish stainless steel heat shield. Contains a flow-efficient ceramic catalyst, ribbed body for strength and a matched inlet and outlet for smooth exhaust flow.
RSpeed High Flow Catalytic Miata 1994 - 1997
List Price: $495.00
Our Price: $260.00
You save $235.00!

These High Flow catalytic converter units are hand built from high grade stainless steel components sourced from the the USA. Our catalytic converter unit feature 2/1/4" flow through piping. Rspeed Converters can be be fitted to the OEM exhaust or any performance exhaust.
Cobalt Stainless Performance Exhaust System 1990-1997 Miata MX-5
Our Price: $379.00

With a sporty exhaust note and a mirror polish that shines like chrome, Cobalt's Miata Sport Exhaust is the perfect piece of eye candy for your favorite Roadster huge buying power brings this one of a kind muffler to the market at a truly affordable price.
Stainless Steel Cat-Back Exhaust with Dual Tip Muffler by Cobalt for 1990-97 Miata
Stainless Steel Cat-Back Exhaust with Dual Tip Muffler by Cobalt for 1990-97 Miata
List Price: $449.95
Our Price: $399.99
You save $49.96!

Made from high grade stainless steel components.