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Ships within 48 hours · Estimated delivery Jul 7 - Jul 12
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Description
Supertech TIVN-1031 - Supertech Performance Valves - Toyota 2ZZ Intake Valve 34 x 5.48 x 111.45 mm/ SS.Supertech TIVN 1031 Supertech Performance Valves Toyota 2ZZ Intake Valve 34 x 5. 48 x 111. 45 mm SS. 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 TIVN-1031 - Supertech Performance Valves - Toyota 2ZZ Intake Valve 34 x 5.48 x 111.45 mm/ SS.
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.
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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]
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4.4 ★★★★★
Based on 2048 reviews
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Product Reviews
★★★★★ 5
Nice
Really nice provide. Not too large. Holds 3 passports comfortably— 4 tightly
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Reviewed in the United States on January 7, 2025
★★★★★ 4
Great for keeping family passports organized while traveling
I bought this for our family’s recent trip to Europe after struggling on a previous trip to keep track of everyone’s passports. Last year I was constantly worried about losing one or forgetting where I put them, so having everything in one place made a huge difference this time. This holder fit all four passports perfectly and still had room for cards and even a spot where I could clip my keys inside.
It ended up being one of those things I used constantly throughout the trip at airports, hotels, train stations, and checkpoints. As long as I had the case with me, I felt confident all four passports were where they needed to be. The material feels durable enough for travel, and the zipper worked smoothly the whole trip. The black color also looks clean and professional without standing out too much.
Pros:
Holds four passports comfortably
Helped keep travel documents organized
Durable feel and smooth zipper
Extra storage for cards, cash, or keys
Lightweight enough for travel
Gave me peace of mind during a busy international trip
Cons:
Slightly bulkier than necessary for minimalist travel
Could be slimmer for people who only want passport storage without extra pockets
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Reviewed in the United States on May 13, 2026
★★★★★ 5
Great passport holder
I really like this family passport holder. This is the second one I buy since we travel with our kids internationally at least once a year.
It’s a good way to keep document organized and on the ready.
I like that it has space for four passport books, plus ID’s and cards. It also has a pen holder. And a couple zippered pockets.
We also travel with our dogs and this case kept all our family’s and pet’s documents in one convenient place.
It’s also easy to use. The zipper is easy to open and close. And I like that the strap is not on the zipper. The last holder I got has the strap on the zipper and when you opened it things could fall off if you weren’t super careful.
I like that little pocket on the front. It’s convenient to keep boarding passes handy.
The quality is great too. I didn’t even read about it being fire proof but that just makes it nicer.
And it’s pretty easy to keep clean because the material can be just wiped down and doesn’t stain easily.
We just keep or passports there and put them on our document area at home. So they’re ready to go whenever we need.
Overall a great product small families traveling.
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Reviewed in the United States on February 12, 2025
★★★★★ 5
Great passport storage for a family of 4!
This passport travel wristlet was perfect of or family of 4 to use while traveling. It was large enough to keep all of of our passports inside and also travel documents. I love that the material is fire resistant, but the material is slightly tacky b/c of that. Not a big deal for me, but something worth noting. I don't mind the material b/c it gives me peace of mind when storing my passports inside that if there is a fire, our passports will be protected. Overall, I think this is a great option to safely store and travel with your passports!
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Reviewed in the United States on April 22, 2025
★★★★★ 4
Mr
Good
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Reviewed in the United States on April 25, 2026