SKU: 41731426238

Supertech BMW Exhaust Valve | Black Nitrated | Single Groove | S42/M42/M50/S50/M52/S52/M54

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Ships within 48 hours · Estimated delivery Jul 29 - Aug 3

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Description

Supertech BMW Exhaust Valve | Black Nitrated | Single Groove | S42/M42/M50/S50/M52/S52/M54Supertech Performance BMEVN 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 BMEVN-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 high performance valves, or hardened black nitrided which is most popular in European and Japanese motors.

Specs:

  • Head Diameter - 30.50mm (STD)
  • Length - 105.65mm
  • Material - Black Nitrated
  • Stem Diameter - 5.96mm
  • Single Groove


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.

All Fitments

BMW
Year Model SubModel Cylinders Liter Aspiration Eng Desg. Fuel Notes
1991 - 1995 318I ALL ALL 1.8 ALL M42 ALL 16Valve
1991 - 1995 318IS ALL ALL 1.8 ALL M42 ALL 16Valve
1995 - 1995 318TI ALL ALL 1.8 ALL M42 ALL 16Valve
2000 - 2000 323CI ALL ALL 2.5 ALL M52 ALL 24Valve
1998 - 2000 323I ALL ALL 2.5 ALL M52 ALL 24Valve
1998 - 1999 323IS ALL ALL 2.5 ALL M52 ALL 24Valve
2001 - 2006 325CI ALL ALL 2.5 ALL M54 ALL 16Valve
1992 - 1995 325I ALL ALL 2.5 ALL M50
M50TU 		ALL 16Valve
2001 - 2005 325I ALL ALL 2.5 ALL M54 ALL 16Valve
1992 - 1995 325IS ALL ALL 2.5 ALL M50
M50TU 		ALL 16Valve
2001 - 2005 325XI ALL ALL 2.5 ALL M54 ALL 16Valve
2000 - 2000 328CI ALL ALL 2.8 ALL M52 ALL 24Valve
1996 - 2000 328I ALL ALL 2.8 ALL M52 ALL 24Valve
1996 - 1999 328IS ALL ALL 2.8 ALL M52 ALL 24Valve
2001 - 2006 330CI ALL ALL 3.0 ALL M54 ALL 24Valve
2001 - 2005 330I ALL ALL 3.0 ALL M54 ALL 24Valve
2001 - 2005 330XI ALL ALL 3.0 ALL M54 ALL 24Valve
1991 - 1995 525I ALL ALL 2.5 ALL M50 ALL 16Valve
2001 - 2005 525I ALL ALL 2.5 ALL M54 ALL 16Valve
1993 - 1993 525IT ALL ALL 2.5 ALL M50 ALL 16Valve
1997 - 2000 528I ALL ALL 2.8 ALL M52
M52TU 		ALL 24Valve
2001 - 2005 530I ALL ALL 3.0 ALL M54 ALL 24Valve
1995 - 1995 M3 ALL ALL 3.0 ALL S50 ALL 24Valve
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • 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
SKU: 41731426238

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4.7 ★★★★★
Based on 19 reviews
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Verified Purchase
Sean Bozarth
Carnegie, US
★★★★★ 5
Helped Clear My Skin Fast
This cleanser really surprised me. The 2% salicylic acid works well without drying my skin out. My breakouts started calming down after a few days, and the redness around my chin went down a lot. It feels gentle but still effective.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 4, 2025
E
Verified Purchase
eileen
San Leandro, US
★★★★★ 5
Best product and brand for my sensitive skin
Works great… this brand is great for acne, white head, dark head and all types of skin condition. I love all their products. This product in particular doesn’t make my skin dry or irritated. Eventho my skin is very sensitive to most products I haven’t had any skin issue with any of their products.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 7, 2026
J
Verified Purchase
Jaci
Grantham, US
★★★★★ 4
okay so far...
I was wondering how my skin would react from this since I've been the cerave SA cleanser for a while now and didn't notice any dryness whatsoever with that. But, I've always wondered the strength or percentage of SA in the cerave (which is impossible to find out I guess...) I'm guessing it's less than 2% so I wanted to try out a cleanser with a higher % to see if there was a different. After a few days I did notice some dryness, which I suppose could be due to wintertime, but I think it's the cleanser. Not surprising, I was bracing myself for dry skin. I will probably take a break until my skin returns to normal and reintroduce this to a few times a week or something, or I may save it for the humid summers. Other than that, I like the formula, it has a very subtle scent I don't mind at all.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 17, 2021
P
Verified Purchase
Paulajade
Houston, US
★★★★★ 5
Smooth and oil free skin
At first I was scepticle, losing hope that anything would help my oily acne prone skin. But then I ordered this, and it's magic. Now my skin is smooth, balanced, and the acne is slowly going away. Best thing of all, no more oily skin! Will be ordering again!
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Reviewed in the United States on November 8, 2025
J
Verified Purchase
Jada
Waukegan, US
★★★★★ 5
BUY THIS!
I WISH i took a before and after photo of my results because the speed of which this worked was insane. Although I encourage to use the product as the package instructs you to, I just needed to share how well it worked for me and how I used it. I began applying the cleanser specifically to my acne prone areas on my face (between my eyebrows, above my lips etc) and allowing it to sit for 15-30 minutes before washing it off then moisturizing immediately after during the night time. in the morning, i cleansed those same areas once more and moisturized with spf 25 sun protection to protect my skin from dryness and repeated those steps each night for the next 3 days. 1 night i decided to just leave the cleanser on my acne prone/scarring areas and the morning after, the most stubborn scar on my face was literally GONE. it was insane. needles to say, this product worked so well for me. instantly cleared up my acne, by scarring, and stubborn bumps on my face. don’t forget to moisturize and use sun protection though because salicylic acid is in fact very drying for your skin. love this product. highly highly highly recommend.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 2, 2023

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