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NGK extended reach spark plugs

Oooo, spark plugs!
NGK extended reach spark plugs

Extended reach spark plugs, ideal for turbo or supercharger use. Sold in sets of four.

Availability: On backorder
You can place an order now and we'll reserve it for you. We are expecting the parts around June 15th, 2020.



NGK extended reach plugs in heat range 6. Recommended for use on turbo or supercharged cars. Fits all NA/NB Miatas.

The extended reach means the burn starts closer to the center of the combustion chamber, giving improved efficiency and power. Every Miata should run extended plugs.

We recommend setting the gap to 0.040" for naturally aspirated engines and 0.028"-0.035" for boosted engines. Always verify the spark plug gap before installing - even if the manufacturer tells you that they come pre-gapped for your specific application.

Sold in sets of four. That's enough for one car.


Additional Information

Additional Information

Part number 04-56201
TÜV approval available No
Fits: 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1999, 2000, 2001, 2002, 2003, 2004 (non-MSM), 2005 (non-MSM), MSM
Manufacturer No
Flyin' Miata exclusive No
Fits Exocet? Yes
Proposition 65 Warning: Cancer and reproductive harm
California emissions No information at this time

Customer Reviews 5 item(s)

Works great
Works great on my stock NA6. Idling and acceleration feel way smoother compared to the old plugs.
Review by Kevin M / (Posted on 2/16/2020)
My go to plugs of choice
I order these from FM each time I replace plugs on my Miata. Free shipping and gapped correctly right out of the box.
Review by Boosted95 / (Posted on 7/12/2019)
I placed these into a 1994 Na in preparation for the turbo build and saw a 3-4MPG average increase and could feel more torque even when N/A. Once I installed a turbo setup 10k later they were flawless even at 15psi. I highly recommend these plugs.
Review by Jake / (Posted on 3/14/2019)
very good
I had been chasing NGK numbers trying to figure out what was best for my NB2. After I bought these, I worried that they were wrong so I sent an email to Flyin' Miata. Within minutes they assured me that I had the correct plugs.
Review by Den / (Posted on 11/2/2017)
What a surprise.
Shocked at the difference. Stock 2002 NB. I was surprised at the difference in performance. Much better than just a new set of plugs.
Review by altafari / (Posted on 11/5/2016)
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