SKU: 29623773319

Supertech Intake Valve Set BMW S54 | Black Nitrated

Sale price$128.25 Regular price$142.50
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Description

Supertech Intake Valve Set BMW S54 | Black NitratedSupertech Performance BMIVN 1040 BMW S54 Intake 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,

Supertech Performance BMIVN-1040 BMW S54 Intake 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 - 35.00mm (STD)
  • Length - 117.50mm
  • Material - Black Nitrated
  • Stem Diameter - 5.97mm


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 Sub Model Cylinders Liter Aspiration Eng Desg. Fuel Notes
2001 - 2006 M3 BASE ALL ALL ALL S54 ALL 24 Valve
2001 - 2002 Z3 M COUPE
M ROADSTER
ALL ALL ALL S54 ALL 24 Valve
2006 - 2008 Z4 M COUPE
M ROADSTER
ALL ALL ALL S54 ALL 24 Valve
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
SKU: 29623773319

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4.8 ★★★★★
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Guy Bloom
Natrona Heights, US
★★★★★ 5
Look great for dress up up casual
Size: 13, Color: Black Leather/Optic White
I wear them every day for work. They are comfortable and light. I will say I was frustrated with the crease in the top that started the first time I wore them but other than that they are a great pair of shoes.
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Reviewed in the United States on March 22, 2026
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LINCOLN STARNES
Natrona Heights, US
★★★★★ 5
RETRO STYLING, VERY COMFORTABLE; QUALITY MATERIAL
Size: 11, Color: Black Leather/Black
VERY COMFORTABLE AND STYLISH PAIR OF SHOES; OLD FASHIONED STYLING; VERY NICE; WHEN THESE WEAR OUT, I WILL CERTAINLY BUY ANOTHER PAIR!!
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Reviewed in the United States on April 15, 2026
E
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Erin
Los Angeles, US
★★★★★ 5
Great shoe
Size: 11.5 Wide, Color: Tan Leather Burnished
Very comfortable business casual shoe. Looks professional, yet stylish
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Reviewed in the United States on April 29, 2026
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Verified Purchase
dch
Lake Worth, US
★★★★★ 4
Hard to Beat for the Price
Size: 10 Wide, Color: Tan Leather Burnished
I purchased these for a business trip to Italy and wore them daily for the two weeks that I was there, during which I walked extensively. For me, there was a break-in period of a few days; before it loosens up, it will bite your heel, so I recommend wearing bandages or heel pads initially. Following the break-in, it's a very comfortable shoe and has served me well. I purchased a wide, and for this shoe, I found the width agreeable; in my experience, Cole Haan wide widths tend to be hit or miss (i.e., a wide is sometimes not all that wide). In terms of durability, I would not expect these to remain in good condition for more than a year if you wear them daily. The leather is not of high quality, but it's acceptable for the price. Expect them to crease very quickly if not using shoe trees. That doesn't bother me, but I know some find it objectionable. All in all, I like them and would buy them again. It's a comfortable alternative to traditional dress shoes for the office and works equally well for casual wear. Most higher quality options cost at least two or three times as much, and many are unavailable in a wide.
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Reviewed in the United States on December 16, 2025
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Nickolas Weston
Cuba, US
★★★★★ 5
My favorite shoes
Size: 14 Wide, Color: White Leather
I’ve probably purchased like 40 pairs of these shoes or more. By far my favorite white sneaker. I have a large foot so the bigger sizes are appreciated. They’re versatile, literally go with anything and they are true to size. At a certain point they start to show wear and you can’t dress them up, but they last as a regular sneaker for a long time afterwards. I try to nab them on sale when they drop to $50-$70, absolute steal at that price point.
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Reviewed in the United States on May 9, 2026

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