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Ships within 48 hours · Estimated delivery Aug 3 - Aug 8
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For Your Every Summer RSVP, with Code: SUMMER15
Description
Supertech BMW M50/M52/S50/S52 Inconel Exhaust Valve - +1mm Oversize - Set of 12Supertech Performance BMEVI 1031S BMW S42 M42 M50 S50 M52 S52 M54 Exhaust valve Set of 12 Specs: Head Diameter 31. 50mm (+1. 0 over) Length 105. 65mm Material Inconel Stem Diameter 5. 96mm Note: To be used with KPR 6S 7. 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
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.
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Exchange/Return Notes
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4.3 ★★★★★
Based on 30 reviews
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Product Reviews
★★★★★ 5
Great summer sheets
Color: Light Blue, Size: Queen, Color: Light Blue, Size: Queen
Love these sheets! I washed them before using. Went by the manufacturer's instructions and they came out beautifully. I purchased these for my summer sheets, and they are very soft and comfortable and really keeps me cool at night. I purchased the light blue, but they are more like aqua green. Not saying I don't like them, the color is very pretty. But if you are looking for light blue, they are not quite that. Are there wrinkles? Yes, of course. They're 100% cotton. Did it interfere with my sleep? Nope. Not at all.
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Reviewed in the United States on May 18, 2026
★★★★★ 4
100% cotton
Color: Dark Gray, Size: King
I have a king size hybrid Purple mattress, and while the fitted sheet pockets don’t exactly fit all the way to the bottom, they didn’t really have issues with riding up much. I just pull them back down when making the bed, and it’s not really an issue. They are a little crunchy at first, but I think they soften with washes. I appreciate that they are 100 percent cotton which was my reason for purchasing. For the price, I am satisfied, and will probably purchase more if I can’t find anything comparable with deeper pockets. I would consider them to be a good mid weight, breathable sheet set, making them nice year round sheets. I haven’t had any pilling issues yet, I will continue to use to be sure this doesn’t become a problem before I purchase another set. The gray color is very pretty and neutral, making it match with many other color schemes. As of now, if the pockets were just a little deeper, I’d give 5 stars.
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Reviewed in the United States on January 2, 2026
★★★★★ 5
Great Buy
Color: Sage Green, Size: California King
Pros: correct color as shown, lightweight, breathable at night, great for sensitive skin, fits corners of bed
Cons: after 2-3 washes, even following wash instructions the sheet does get smaller making it harder to fit bed.
Overall 10/10, would recommend buying & I will buy in future.
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Reviewed in the United States on June 2, 2026
★★★★★ 3
Scratchy, not soft, smell really bad at first, don't look great.
Color: Good Vibes, Size: King
Out of the bag these smelled really toxic. I pulled some loose threads, of which there were many, and did a burn test. The stitching threads are synthetic. Then I pulled a fabric thread, this burned natural. After washing, the smell was gone. These fit the bed ok. They are, I dare say scratchy. I hope they soften with washes. They look old immediately after wash.
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Reviewed in the United States on May 14, 2026
★★★★★ 5
Perfect for my little hideaway
Color: Wesley Taupe, Size: Twin, Color: Wesley Taupe, Size: Twin
We converted an old small treehouse into a cozy nook for adults and kids alike. I ordered this sheet set for the twin mattress because the color and vibe match the decor.
They're lovely and did exactly what I wanted for the space. They're soft and a perfect thickness for the warmer months. It gets hot up there in summer.
The mattress is 5" memory foam, so these have a little extra "give" for my mattress and should fit a standard mattress just fine. Very cozy.
They're only printed on one side, which is common for most patterned sheets. They're soft out of the bag and breathable.
The fitted sheet has elastic all the way around, so they seem to stay on so far. Nice sheets!
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Reviewed in the United States on April 1, 2026