SKU: 6060571190

Supertech MAIVN-1204 - Supertech Performance Valves - Mazda Miata 1.8Lts. Intake Valve 33.00x5.96x103.1m

Sale price$20.68 Regular price$22.98
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Ships within 48 hours · Estimated delivery Aug 24 - Aug 29

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Description

Supertech MAIVN-1204 - Supertech Performance Valves - Mazda Miata 1.8Lts. Intake Valve 33.00x5.96x103.1mSupertech MAIVN 1204 Supertech Performance Valves Mazda Miata 1. 8Lts. Intake Valve 33. 00x5. 96x103. 1m Supertech valves are the best on the market, made from one piece of forged stainless steel for the ultimate in strength and durability. Supertech valves go through a special heat treatment process that obtains the right amount of harness for each engine to ensure the ultimate valve for your performance motor. Supertech offers their valves in either

Supertech MAIVN-1204 - Supertech Performance Valves - Mazda Miata 1.8Lts. Intake Valve 33.00x5.96x103.1m

Supertech valves are the best on the market, made from one piece of forged stainless steel for the ultimate in strength and durability. Supertech valves go through a special heat treatment process that obtains the right amount of harness for each engine to ensure the ultimate valve for your performance motor. Supertech offers their valves in either chrome coating, used in high performance valves, or hardened black nitrided which is most popular in European and Japanese motors.

Supertech High Performance Race Engine Valves features:

  • The microhardness is higher than the stainless steel base material, keeping good ductility beneath the hard nitrided layer (microhardness is 800HV minimum)
  • Surface finish is smoother than with chromed stems, having less friction between stem and guide.
  • Valve seat surface is harder with the nitrided layer, lasting longer with lead free fuels, alcohols, nitro or other "explosive" mixes. Matches any kind of seats (nodular iron seats, steel powder metal seats, hard aluminum-copper seats or beryllium copper seats).
  • Higher rpm's engines take full advantage of all previous features. The higher the engine speed the bigger the power loss due to internal engine friction! The black nitride layer reduces this power loss due to less valve-guide friction.
  • The nitrided layer is adhered to the base material at a microscopic level, so does not"flake" or brake when the valves bend due to impacts with the pistons.
  • The Black Nitride applies to the whole valve while the chrome coating is only applied to the stem.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 6060571190

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4.3 ★★★★★
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hannah k
Bozeman, US
★★★★★ 5
Good quality!
Good quality for price. Exactly what I expected
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Reviewed in the United States on January 15, 2026
A
Verified Purchase
Anna Cummins
San Leandro, US
★★★★★ 5
Great Quality. As Described.
As described. Great quality. Attractive
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Reviewed in the United States on January 13, 2026
B
Verified Purchase
Bill
San Leandro, US
★★★★★ 5
The Ideal Organizer
The UPERGO Valet Tray is an ideal size for my nightstand. It does not slide around but stays put where I position it. Each section is useful for the items I want to keep close at hand but in an organized fashion, cell phone, wallet glasses, change, etc. I love the cork interior of the tray; it’s stylish and functional.
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Reviewed in the United States on December 9, 2025
J
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JOY11
Louisville, US
★★★★★ 4
It's a functional organizational tray
I bought this valet tray for my nephew to be able to organize his go-to items, such as his cell phone, wallet, watch, bracelet, etc. I expected the tray to look more upgraded. The compartments are shallow, but they do the job. It is made of a cardboard-type material ( corkboard would have been nicer), and the black platform is a metal construction, which gives it a more stable and solid structure. Overall, for the price and its functionality, I guess it was worth the purchase.
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Reviewed in the United States on January 15, 2026
B
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BroRon
Omaha, US
★★★★★ 5
Really wonderful
Beautiful and realy convenient to use.
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Reviewed in the United States on February 11, 2026

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