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Supertech Performance MAIVN-1206 High-Performance Engine Valve

(1994-2005 Mazda Miata; 1990-1999 Mazda Protege; 1991-1996 Ford Escort)

Manufacturer

Picture for manufacturer Supertech Performance

Part Number

MAIVN-1206
17 reviews
Sale Price

$21.11

Estimated ship date Saturday, November 28

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Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

Supertech Performance brings over 20 years of precision manufacturing expertise to the MAIVN-1206 engine valve. Engineered in close collaboration with professional engine builders, these valves deliver an optimal balance of high flow rate, durability, and consistent quality for demanding performance applications.

Supertech recognizes that every engine has unique requirements, which is why their valves are available in multiple materials and finishes to suit a wide range of builds — from naturally aspirated street engines to forced-induction race applications.

Available Materials:

  • Stainless Steel (One-Piece Forged): Manufactured primarily from EV8 (21-4N) stainless alloy for superior strength and reliability. Additional alloys with specialized heat treatments are also available for specific applications. Suitable for both intake and exhaust use.
  • Inconel 751 Nickel-Base Alloy: Designed for exhaust valves subjected to extreme heat, such as those found in turbocharged or supercharged engines. Inconel's outstanding high-temperature resistance makes it the preferred choice for forced-induction builds.

Coating Options:

  • Chrome Coating: A widely used treatment in performance valves, providing a hard, wear-resistant surface finish.
  • Black Nitride: A surface-hardening treatment that produces a smoother finish than chrome, reducing friction between the valve stem and guide for improved longevity and performance.

Sold individually — one valve per unit. Order the quantity that matches your engine's total valve count (e.g., order 16 for a 16-valve engine).

Products specifications

Fits

1994-2005 Mazda Miata; 1990-1999 Mazda Protege; 1991-1996 Ford Escort

Head Dia

34.00mm (+1.0)

Length

102.60mm (+0.6)

Material

Black Nitrided

Stem Dia

5.96mm

First time shopping with them but overall very pleased. Thanks Ron

simple and easy to use

Great

Super simple to navigate the site and it seems they have already answered all questions before they are asked. Good to deal with a total information site.

First time to shop here and it went well. If received as expected will be back. Thanks, Bill

..

Quick and easy with hard to find item available!

Got what I needed in a timely manner, thanks!

The product was exactly as advertised! Thank you for keeping the product price and shipping costs so low. You beat the competitors hands down for the same exact product. It was a pleasure doing business with you! You bought yourself more positive advertising than money can buy! Thanks again. Lou

Great Price!!<br>Fast Shipping!!<br>Would definitely use again....

Easy ordering system very nice !

Great deals at unbeatable prices!

Easy to find and price was good. The product fit well. Works well so far

Product was as described, shipping was fast, and communication was excellent. Plus I saved $$. Thanks Autoplicity! I'll be a repeat buyer and referral source.

Found a Thule Vertex bike hitch on here for $50 cheaper than amazon. Extremely fast shipping. Definitely recommend purchasing from here.

This was my first order with Autoplicity. I was pleasantly surprised when my order showed up quickly and was exactly what I wanted. I will be buying from this company again. Thanks for the quick service and fair pricing.

SO HAPPY! I have to admit, I was hesitant because I had never heard of autoplicity and there wasn't item a picture up for the Thule T2 rack I bought, but wow am I happy. Autopliicity had it for $100 less than other sites and the shipper was Amazon prime fast!!! Definitely a happy customer!!!!

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