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Description
Supertech Exhaust Valve | Inconel | Single Groove | BMW S42/M42/M50/S50/M52/S52/M54Supertech Performance BMEVI 1030S BMW S42 M42 M50 S50 M52 S52 M54 Exhaust valve 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
Supertech Performance BMEVI-1030S BMW S42 / M42 / M50 / S50 / M52 / S52 / M54 Exhaust valve
- Head Diameter - 30.50mm (STD)
- Length - 105.65mm
- Material - Inconel
- Stem Diameter - 5.96mm
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.
Fits:
BMW S42 / M42 / M50 / S50 / M52 / S52 / M54
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]
- Please click here for more details>>> Return & Exchange Policy
4.0 ★★★★★
Based on 10 reviews
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Product Reviews
★★★★★ 5
Nice face sunscreen!
Great face sunscreen! It has high zinc and looks nice under makeup. I will continue to purchase. Not sure why it’s only a SPF of 30. It has 24% zinc which is higher. It’s a little thicker than some of the thinner ones I’ve used but I like that. I feel I’m getting good coverage
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Reviewed in the United States on April 2, 2026
★★★★★ 3
An Effective Sunscreen With Some Drawbacks
I like the safety and effectiveness of Thinksport tinted sunscreen. It's formulated carefully and I found it quite effective; I appreciate that it's not tested on animals. It is easy to apply and blends in with no chalky or white residue and doesn't come off easily (in fact washing it off later is not especially easy). I very much appreciated its effectiveness as I didn't ever burn when using this tube.
With all that in mind why did I give it only three stars and throw away the tube before I even used half of it? Two reasons: I frequently run while wearing sunscreen and that, obviously, leads to sweating. When you sweat with this anything that you touch with a treated surface will be smeared with the brown tint of the sunscreen (particularly your shirt when your face, neck, or arms contact it, which may be more than you think). This looks akin to pancake makeup on clothes. It washed out of the shirts I got it on, but they did seem to get dingier after multiple cycles (especially around the collar). The second reason I didn't like this sunscreen is that when applied to the forehead and then perspiring this product really stung my eyes. I have had that product with some other brands as well, so it's definitely not a Thinksport exclusive issue, but still it's annoying.
I used almost half the tube then switched back to my normal brand, which while also not ideal in some ways, doesn't have these issues. I have not given up on the Thinksport brand entirely, as I have recently purchased some of their untinted sunscreen. I have only used it a few times, but initial impressions are good.
If you are unconcerned about the issues of staining from this product or you don't plan to wear it while doing anything strenuous, the tinted Thinksport sunscreen product may work great for you: it's easy to apply and quite effective.
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Reviewed in the United States on August 2, 2018
★★★★★ 5
Have to protect our skin! This works
My daughter in law recommended this. It is light weight but gives good Sun protection. The color tint is perfect. Easy to add to the morning skin routine
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Reviewed in the United States on May 2, 2026
★★★★★ 5
Perfection!
20+% Zinc +Titanium dioxide! perfect for prevention AND burn treatment.. in case you didn't know!
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Reviewed in the United States on April 14, 2026
★★★★★ 5
Former celeb makeup artist thinks this is THE best!
Color: Soft Brown, Size: 1 Count (Pack of 1)
I was a pretty successful makeup artist based in NY for many years. I am OBSESSED with eyebrows because even a few millimeters and a different angle can affect the way the entire face looks. Most importantly-I started drawing my eyebrows on in the 1970’s at AGE 12 because I was tired of people asking me “why I plucked my eyebrows” at age 12. I hardly ever had any-so from a very young age I drew them on. Now I am 58-and nothing is more aging than a face with no eyebrows. I won’t even walk my dogs without drawing them on-lol! I am as obsessed with product quality as I was when working my career and at the top of my game, so I try EVERYTHING. I also put my brows on first thing in the morning and do not want them to move or wear off under any conditions-so these relatively new extreme wear products are genius. I have tried ALL the eyebrow “pens” and this is the best. I have almost zero natural brows now, so I draw on each hair with the fine tip (microblade style) in the shape I want. I use two shades, a lighter and a darker because it creates the most real looking optical illusion on my face. I do not have to blend-but a spoolie type thing is attached to the lid if needed. This is the only brand that stays on, never smudges when I work out and even stays on through the night if I wear no makeup and wash my face with a non oil cleanser lightly. (I usually use a cleansing oil and that is the best way to remove this product as well) You can also remove this brow pen with an oil based eye makeup remover (Garnier-but even then it resists removal-genius!) There are about 4 or 5 brow products I think are good enough (out of the 50 plus I have tried in my career) and due to ease of application, shades, fine tip and longest wear-this is holy grail for me.
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Reviewed in the United States on October 25, 2022