SKU: 38986935263

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

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Ships within 48 hours · Estimated delivery Aug 22 - Aug 27

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Description

Supertech BMW Exhaust Valve | Black Nitrated | S42/M42/M50/S50/M52/S52/M54Supertech Performance BMEVN 1030 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-1030 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


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: 38986935263

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4.6 ★★★★★
Based on 21 reviews
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B
Verified Purchase
BadBullfrog
San Leandro, US
★★★★★ 3
Best for small inquisitive dogs
This dog puzzle worked.for.abput a day until our lab decided it was easier to just chew on it until it gave up the treats. The outer ring of yellow sliders were good.but the red required interactive manipulation of the center sections that only frustrated our lab to the point where she just picked it up to chew and drop until it gave up the treats. Great idea, but not for a brute-force attack! I will say the plastic sliders have held up longer than expected but in the end our lab just had fun chewing it while carrying across the yard. She did enjoy it initially but I think grew bored or maybe frustrated with it. Probably best left to smaller breeds to fidget with.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 13, 2026
B
Verified Purchase
Becky
Port Orchard, US
★★★★★ 5
Great for my puppy
Keeps my puppy entertained and good cause she’s picky at times and she eats her food this way sometimes without realizing lol
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 13, 2026
D
Verified Purchase
Donna M.
Port Orchard, US
★★★★★ 5
Good intermediate smart toy
This has become one of my puppy's favorite boy's. He is so smart and flustered through the beginning interactive toys quick. I got him this one next. The design is good. He did get through some ok, but got frustrated early with the harder ones. Started flipping and chewing it. It wasnt easy to chew through but did snap a few hinges. Stubborn dog, but still enjoying it. . It moves easily and does stimulate him to think. Great toy especially for smart dogs. Mine is just too impatient and growls at it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 18, 2026
P
Verified Purchase
Paula Cacek
Boise, US
★★★★★ 5
Great toy
Color: Yellow
My dog loved this! Kept him entertained for some time. Only problem I had was trying to unscrew the ends after he was done so I could clean it (my dog slobers a lot lol). With him playing and trying to chew it made the ends tighten more. But over all great toy!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2026
A
Verified Purchase
Amazon Customer
Massapequa, US
★★★★★ 5
Fun toy!
Color: Yellow
It was funny to see how my cat figured out how to roll the toy to get treats out. Great idea that makes your pet work a little for a reward.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 3, 2026

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