SKU: 59322243427

Supertech Exhaust Valve Set BMW S54 24v | Inconel | Single Groove (31.5mm +1)

Sale price$188.10 Regular price$209.00
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Description

Supertech Exhaust Valve Set BMW S54 24v | Inconel | Single Groove (31.5mm +1)Supertech Performance BMEVI 1045S BMW M3 S54 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


Supertech Performance BMEVI-1045S BMW M3 S54 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 - 31.50mm (+1.0)
  • Length - 119.10mm
  • Material - Inconel
  • Stem Diameter - 5.95mm
Note: Must be used with single groove keepers KPR6S/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 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]
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SKU: 59322243427

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Chris
Port Orchard, US
★★★★★ 5
Buy them!
Size: 8.5, Color: Black
Great fit, very comfortable and they look great. Highly recommend
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Reviewed in the United States on June 9, 2026
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Trey S
Belleville, US
★★★★★ 3
Doesn't really slip on too well.
Size: 11, Color: White, Size: 11, Color: White
Doesn't really slip on too well. Also, since the heel is ridged it unintentionally allows my heel to slip out while walking.
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Reviewed in the United States on June 8, 2026
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King Richard
Lexington, US
★★★★★ 4
Really like these for casual summer outfits
Size: 10.5, Color: White
These are really nice kicks. Stylish, comfortable, and eye catchy for sure. Not too heavy, good price, and fit well. These are great, casual white shoes for a summer outfit. I gave it 4 out of 5 stars as these do pick up and hold onto dirt and smudges more than I’d like to see. Yes, I know, white shoes are magnets for this stuff, but these tend to scuff and discolor more than I would have assumed. I live in an area with lots of bad weather most of the year so I only get a chance to wear them for a few months of the year unless I want to brave the wet and muddy weather. If you live in an area that has lots of sun and are willing to put these to the test and clean them often, I would say go for it.
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Reviewed in the United States on January 13, 2026
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fred crane
Charlottesville, US
★★★★★ 5
Terrific shoes
Size: 8.5, Color: Cognac
Fit is perfect. Looks great. Comfort is terrific. Wood buy them again.
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Reviewed in the United States on November 8, 2025
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Luan Rama
West Palm Beach, US
★★★★★ 1
Poor quality
Size: 9, Color: Black/Black, Size: 9, Color: Black/Black
Bottom of shoes after three weeks worn already have a hole in it! Didn’t expect to have to toss them away so soon.
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Reviewed in the United States on May 13, 2026

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