RNJ Performance

Mazda Miata 1.6L 1989-1993 Turbo Downpipe

$169.99


Hardware

  • All of our products come with all the necessary bolts and gaskets to make installation simple and straight forward.
  • If you would like more information about which specific bolts and gaskets are included in your purchase, please don't hesitate to reach out to us, and we'll get back to you as soon as possible.

Friday and Weekend Purchases

  • If you're making a purchase on any Friday, Saturday, or Sunday, please keep in mind that your items will be shipped out on the following Monday.

Returns / Order Cancellation

  • We provide a 60-day return policy; for detailed information, kindly refer to our return policy section.
  • If you wish to cancel your order before it has been shipped, we charge a 5% restocking for purchases that have been made and have not yet been dispatched. 

Shipping Information

  • At RNJ Performance, we prioritize fast delivery. All products are shipped the next day, ensuring you receive your order as quickly as possible. Most orders are processed and dispatched from our main facility in Livingston, MT, while select shipments may be fulfilled from our California warehouse. For detailed information on our shipping process, please visit our Shipping Information page.

Consumer Use Agreement

Before proceeding with your purchase, please carefully read and acknowledge the following:

1. Intended Use: This product is designed exclusively for vehicles intended for competition or race events on closed courses. Any use on public roads or vehicles not intended for competition is strictly prohibited by federal and state regulatory agencies.
2. Purchaser Acknowledgment: By proceeding with this purchase, you acknowledge the following:
• You intend to install this product on a vehicle designed for competition or race use ONLY on a closed course.
• You have reviewed and confirmed your local laws, ordinances, and regulations regarding compliance with EPA (Environmental Protection Agency) and CARB (California Air Resources Board) guidelines, which clearly state that altering or modifying a motor vehicle pollution control system without an EO # (Executive Order Number) is illegal.
3. Legal Consequences: Installation of non-CARB approved parts on a pollution-controlled vehicle in California and cooperating states may result in actions by the DMV, such as revoking vehicle registration and failing smog inspections. Law enforcement may cite you for using illegal aftermarket parts, and your title and license plate may be seized.
4. Federal Clean Air Act: WARNING - FOR CLOSED COURSE COMPETITION USE ONLY. NOT INTENDED FOR STREET USE. THE SALE, USE, OR INSTALLATION OF THIS PRODUCT MAY ALSO BE ILLEGAL NATIONWIDE UNDER THE FEDERAL CLEAN AIR ACT (42 U.S.C. § 7522(A)(3))
5. Product Claims: RNJ Performance does not make claims or representations about parts that lack CARB certification with an Executive Order, and it does not claim or represent parts as legal for use on public roadways. This product is designed for use in competition on closed courses and is labeled as “RACE USE ONLY.”

By proceeding with your purchase, you understand and acknowledge the terms and conditions outlined above. RNJ Performance and its distribution chain are not responsible for your independent decision to install or use this product. Please ensure that you comply with all applicable laws and regulations in your area.

Introducing our Mazda Miata 1.6L 1989-1993 Turbo Downpipe, engineered to exceed OEM standards and elevate your vehicle's performance. Crafted with precision and built for durability, this kit offers a direct bolt-on fitment, ensuring seamless installation and optimal performance.

Key Features:

  • Brand New Product: All components are brand new, ensuring top performance and longevity straight out of the box.
  • Material Used: Constructed from high-quality materials for enhanced strength, durability, and resistance to heat and corrosion.
  • Exceeds OEM Standards: Manufactured to meet or exceed OEM specifications, guaranteeing reliable performance and quality.
  • Direct Bolt On Fitment: Designed for an effortless, direct bolt-on installation with no modifications required.
  • Pipe Design: Our downpipe configuration optimizes exhaust flow for improved power output.
  • CNC Machined Metal Flanges: Includes CNC-machined flanges, providing a leak-free seal and superior durability.

Specifications (Estimated):

  • Inlet Size: 2.5" / 63.5mm
  • Outlet Size: 2.5" / 63.5mm

What's Included:

  • 1x Mazda Miata Downpipe
  • 4x Gasket
  • 11x Nuts, Washers & Bolts

Compatibility/Replacement For:

  • 1989-1993 Mazda Miata 1.6L 

Please Note: Professional installation is highly recommended as no installation guides are included. This product may not be legal for use on public roadways; check local laws and regulations before installation.

Enhance your vehicle's performance with our expertly designed kit, crafted to deliver noticeable power gains and a refined driving experience. Whether you're looking to improve track times or simply upgrade your daily driver, this kit provides the quality and precision engineering you need to maximize your vehicle's potential. Trust RNJ Performance to provide the components that deliver both reliability and high performance, taking your vehicle to the next level.

Customer Reviews

Based on 4 reviews
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e
evan libby

I wanted to write this review so that others who purchase this down pipe can know about the pros and cons. To start off with, this was a very affordable down pipe. Other down pipes, including shipping start at like $500. But of course with a low price, quality is sacrificed. Haven't gotten to give it a good heat test yet with the turbo but welds seem solid. The 5 bolt flange plate did not line up to all of the holes on my turbos flange. I had to drill the holes on the gasket and on the down pipe flange to make 4 of the 5 bolts fit. (i destroyed the threads accidentally in one of the holes on the turbo). I don't really know if it's the down pipes fault for fitment or the turbo but figure it should get put out there. Fitting into the far was easy however this will NOT bolt up to your pre-existing catalytic convertor. The down pipe is 3" and the cat is 2". It's also a different length than the OEM down pipe so my entire exhaust had to be removed. The tubes/flanges for the external wastegate did not fit my wastegate entirely. The wastegate would want to be pulled up and away from one side while the other needed to be pulled down and towards to. Anyways, cheap solution was slap 2 gaskets on 1 side and fill gap with JB weld(i am a cheapo). Personally I would have welded completely around the tubes and flanges for the external wastegate. Mine were just tac-welded on. On the passenger side at the end of the down pipe the flange is at a sharp angle so one of the provided bolts needs to be used with the head of the bolt being on the down pipe side and thread goes towards the back of the car. The car did sound nice on start up but again not much testing has happened because my return line was bellowing smoke. Full honesty I would say I love my down pipe and it definitely saved me a couple hundred dollars. For anyone worried if this is a scam, it is not. I was a bit worried at first because of no reviews online but I waited the 2-3 weeks to get it shipped all the way to Hawaii and everything worked out with minor modification. If you are going budget then I would suggest this down pipe however if you want perfect fitment and top notch quality then go spend the $500-1000 elsewhere.

e
e.l.
Honest Review

I wanted to write this review so that others who purchase this down pipe can know about the pros and cons. To start off with, this was a very affordable down pipe. Other down pipes, including shipping start at like $500. But of course with a low price, quality is sacrificed. Haven't gotten to give it a good heat test yet with the turbo but welds seem solid. The 5 bolt flange plate did not line up to all of the holes on my turbos flange. I had to drill the holes on the gasket and on the down pipe flange to make 4 of the 5 bolts fit. (i destroyed the threads accidentally in one of the holes on the turbo). I don't really know if it's the down pipes fault for fitment or the turbo but figure it should get put out there. Fitting into the far was easy however this will NOT bolt up to your pre-existing catalytic convertor. The down pipe is 3" and the cat is 2". It's also a different length than the OEM down pipe so my entire exhaust had to be removed. The tubes/flanges for the external wastegate did not fit my wastegate entirely. The wastegate would want to be pulled up and away from one side while the other needed to be pulled down and towards to. Anyways, cheap solution was slap 2 gaskets on 1 side and fill gap with JB weld(i am a cheapo). Personally I would have welded completely around the tubes and flanges for the external wastegate. Mine were just tac-welded on. On the passenger side at the end of the down pipe the flange is at a sharp angle so one of the provided bolts needs to be used with the head of the bolt being on the down pipe side and thread goes towards the back of the car. The car did sound nice on start up but again not much testing has happened because my return line was bellowing smoke. Full honesty I would say I love my down pipe and it definitely saved me a couple hundred dollars. For anyone worried if this is a scam, it is not. I was a bit worried at first because of no reviews online but I waited the 2-3 weeks to get it shipped all the way to Hawaii and everything worked out with minor modification. If you are going budget then I would suggest this down pipe however if you want perfect fitment and top notch quality then go spend the $500-1000 elsewhere.

M
Michael E

Amazing product good quality welds on this piece. Although fitment on the waste gate actuator is still iffy

I
Izacc Zamora
Forgot

I didn’t get my hardware and gasket

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