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Description
Supertech Exhaust Valve | Inconel | Single Groove | BMW S42/M42/M50/S50/M52/S52/M54 (31.5mm)Supertech Performance BMEVI 1031S 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-1031S BMW S42 / M42 / M50 / S50 / M52 / S52 / M54 Exhaust valve
- Head Diameter - 31.50mm (+1.0 over)
- 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:
M50TU |
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M50TU |
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Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
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- 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
4.3 ★★★★★
Based on 12 reviews
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Product Reviews
★★★★★ 5
Very good wireless mouse
Color: Matte Black, Color: Matte Black
Everything is great with this mouse. It is comfortable, responsive, and easy to use. The wireless connection works perfectly, and the battery lasts a long time. Very good value for the price, I highly recommend it.
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Reviewed in the United States on May 21, 2026
★★★★★ 5
Recommended for sure ts peak
Color: Matte Black
Not really the best at explaining, but here's something simple :v
This mouse works very well for everything in my opinion, especially gaming. It does has silent clicks, but as a GD player I click the mouse kinda hard, and it's a bit louder but that's ONLY because of the way I click. The mouse is very responsive and pretty comfortable, although I have no Idea what a 10/10 comfortable mouse feels like. This mouse is durable, don't ask how it happened, but it's survived a few drops and still works perfectly. As far as connectivity and compatibility, I'm not exactly sure, but it connected to my Windows 11 as soon as I plugged the driver in, it also connected to my PS5 without issues. To easily tell the size, it's about as wide as an apple, and as long as maybe half of a normal-sized water bottle. The 3 bars of lighting that show the battery percentage aren't exactly the brightest, but it's easy to tell that the mouse is on and how much battery it has. The easily accessible customizable DPI button has about 4 levels to choose from, which all work well, level 1 is pretty slow and level 4 is fast if you're unfamiliar with higher DPI. The 3rd setting for the DPI is very easy to control, I feel like it follows my movements at a very nice speed.
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Reviewed in the United States on April 16, 2026
★★★★★ 5
Nice yellow mouse
Color: matte yellow
The mouse is really nice, comfortable, and easy to use. It stands out on my computer desk thanks to its yellow color. It is wireless and charges via USB—it doesn't use batteries, which I’ve found to be excellent so far. I haven't been using it for very long, so I don't know how long the charge lasts.
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Reviewed in the United States on April 23, 2026
★★★★★ 4
A reliable mouse for people who don't need all the bells and whistles.
Color: Matte Black
I wanted a mouse without all the bells and whistles. I don't care about programming my mouse or having 18 ways to move it remotely. All I want is an ergonomic point and click device. This mouse meets my requirements. I give it four stars because, on waking my computer, the cursor is "frozen" until I click it. And, the mouse is a bit small for my hand. These nits aside, this mouse is perfect for my needs.
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Reviewed in the United States on October 4, 2025
★★★★★ 5
Reliable mouse.
Color: Matte Black
Amazing mouse if you want something simple for work, has good click sounds, doesn't need to be charged often, and is easy to transport! It also is really good for smoothness and comforting on grip.
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Reviewed in the United States on May 12, 2026