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Description
Supertech Performance NIVN-1017 Nissan 300ZX/VG30D Intake Valve 34.50x5.97x103.15mm / SS/ Blk. Nitrided/ 0.5mm +Supertech Performance NIVN 1017 Nissan 300ZX VG30D Intake Valve 34. 50x5. 97x103. 15mm SS Blk. Nitrided 0. 5mm + 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
Supertech Performance NIVN-1017 Nissan 300ZX/VG30D Intake Valve 34.50x5.97x103.15mm / SS/ Blk. Nitrided/ 0.5mm +
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.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
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4.3 ★★★★★
Based on 5 reviews
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Product Reviews
★★★★★ 5
Works Great, Fragrance-Free & Lathers Well
Size: 2.5 Fl Oz (Pack of 1)
I recently became highly allergic to all artificial fragrances and beeswax so this Sensitive Skin Vanicream Gentle Facial Cleanser was recommended by my dermatologist. I tried a few other brands, and this one is my favorite by far. It lathers well, is not greasy, and leaves my skin feeling soft and clean. I like to use the 8 oz bottle size with the pump at my sink and in my shower, but this 2.5 oz size was perfect for 2 weeks in Europe, and I still have a lot left with using it twice a day. Also, it doesn't burn my eyes, so I would say it is safe for taking off eye make up. Highly recommend!
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Reviewed in the United States on May 27, 2026
★★★★★ 5
A total lifesaver for seb derm!
Size: 8 Fl Oz (Pack of 1)
I honestly don’t know what my husband would do without this cleanser. He struggles with seborrheic dermatitis, and finding something that doesn’t trigger a flare-up is usually a nightmare, but this stuff is absolute gold. It’s so gentle on his skin, no fragrance or weird oily texture and the fact that it’s less than $10 is honestly a steal for the amount you get in a bottle.
We’ve repurchased multiple bottles at this point because it’s a total staple in his routine now. He has tried EVERYTHING even prescribed stuff from the dermatologist but nothing worked until we found this.
It’s also super easy to dispense and use with the pump, so there’s no mess or hassle. If you're looking for something that actually works for sensitive skin without breaking the bank, just get it!
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Reviewed in the United States on March 28, 2026
★★★★★ 5
The pads have changed but still a good product
I have been using these make up remover pads for many years now and will continue to use them. I like the 3 pack so that I do not run out. I usually only use 1 pad a day so a 3pk will last me for a long while. I do not have any issues with the pads drying out in the time frame from opening them to using the last one so that is a major plus. I have no issues with these on my skin or that close to my eyes and they do a great job of removing my mascara, which is the only make up I use. I recommend them. I will say that in 2025 they have changed the material for their pads, they are now thinner and do not have the texture they used to have which for me the only difference is that they can be a bit more difficult to separate but nothing to complain about.
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Reviewed in the United States on November 7, 2025
★★★★★ 5
Excellent Product!
Ordered for my Lady, she’s says it’s an Excellent Product fir Removing Eye Make-Up.
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Reviewed in the United States on May 2, 2026
★★★★★ 5
Amazing make-up remover pads, that work just as well as oil base ones, without the oil.
I have tried many many make-up removers and I always come back to this one. I stumbled onto this one at a pharmacy a long time ago, and I can honestly say it's the best. I have tried many others since, high end, lower end, but this is my favorite. it's obviously extremely convenient, being in a pad, rather than having to wet a pad yourself, which poses a host of problems. Sometimes you run out of pads and you have to use toilet paper, which sucks, sometimes it spills, which you them have to clean, making an annoying two step process even more annoying, by it being a three step process. These convenient pads, a one step process, are so great, because unlike most other pads I tried, these are moist. I tried so many pads that lose their moisture after you open the package, and these remain very moist. I love that its a twist off cap. Also, they are the best at removing eye makeup, better than anything I tried, except for oil pads, HOWEVER, unlike oil pads, these do not make your vision blurry and get into your eye. This brand also makes oil pads, which i dislike. Oil always manages to get into my eyes, but the thing about oil pads is that they work at removing makeup. Well Guess what?!?! These work as well, WITHOUT THE OIL!!! And they DON'T dry out your eyes and face. Love them.
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Reviewed in the United States on September 13, 2015
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