SKU: 80734576386

Supertech BMW Exhaust Valve | Black Nitrated | Single Groove | S42/M42/M50/S50/M52/S52/M54 (31.5mm)

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Ships within 48 hours · Estimated delivery Aug 11 - Aug 16

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Description

Supertech BMW Exhaust Valve | Black Nitrated | Single Groove | S42/M42/M50/S50/M52/S52/M54 (31.5mm)Supertech Performance BMEVN 1031S 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-1031S 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 - 31.50mm (+1.0 over)
  • 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: 80734576386

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4.3 ★★★★★
Based on 28 reviews
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S
Verified Purchase
Shein
Lexington, US
★★★★★ 5
Worth it! No more mess
My puppy loves to eat disposable pads and vomits after (I do not have time to wash reuseable ones; also, the smell it leaves in the washer is a nono). I go through around at least 4 pads a day (bleeding money) and constantly hadb to tuck them under the playpen hoping he doesn't get a piece of it. But when he started to dig through the pad even when it was on a regular pad holder, i lost it. This right here, he cant do anything! I get to only use 1 disposable pad a day: every morning, i take out the top mesh part, spray it down with odor eliminator/disinfectant, wait few minutes, and then spray down everything with a garden hose. Tap a bit, wipe it down with just 1 paper towel and put it back over a fresh pad. When he poops, i just pick it up like how i pick poop outside and then disinfect the area. My boy Lucas doesnt stink anymore (he tend to sit on the other pad holder where pee is still wet), and i dont have to go outside of the heat. $55 is well worth it in the long run. ⚠️CAUTION⚠️ *Make sure your pet has short nails. Long nails that curves down will get stuck in the holes. If they get startled and twist themselves, BIG PROBLEM. Please dont indirectly hurt your doggie. Edit: newest set up in the pic. He pees and poops exclusively there now since introduced.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 22, 2024
E
Verified Purchase
Elizabeth
Carnegie, US
★★★★★ 5
Good quality and definitely worth it for energetic dogs.
Color: Orange
The automatic moving and rolling action really grabs my dog’s attention, and the rope adds extra fun for chasing and playing. It helps reduce boredom and keeps my dog mentally stimulated, especially when indoors. The motion activation works well, and it’s a fun and engaging toy overall.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 3, 2026
J
Verified Purchase
Jason Dong
Waukegan, US
★★★★★ 5
my dogs love it
Color: Orange
This interactive toy has been a lifesaver for keeping my furry friend occupied. It moves around in unpredictable ways, which really keeps him engaged and guessing. The rope attachment is a nice touch, allowing for a bit of tug-of-war when he's feeling energetic. It's durable enough to withstand his enthusiastic play, which is a huge plus. I've noticed he's less anxious and destructive when I'm not home since he has this to play with. Definitely a great purchase for any dog owner looking to provide some mental stimulation.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 25, 2026
D
Verified Purchase
Douglas J
Los Angeles, US
★★★★★ 5
How many dog toys have you bought that just laid on the floor unused?
Color: Orange
New husky has more energy than an entire pre-school - even being walked more than three miles a day wasn’t sufficient to drain her excess energy. I threw the dice on this - and it’s AWESOME. Comes with an extra rope and an extra side piece. Rechargeable with a USB-C cable. When you turn it on, the blue LEDs flash, the entire device buzzes, bounces, and races back and forth across the floor. After a couple of days of uncertainty, my new husky LOVES this. She chases it around, grabs it by the attached rope and carries it from room to room. After a short bit of activity, the toy goes into ‘sleep’ mode, until either the dog touches it again or a timer has elapsed, and then it fires up and starts buzzing and racing around the floor again. From a full charge, the toy will keep your dog entertained all day. Bright orange color makes it much easier to find when it’s rolled behind the toilet (as it did this afternoon). Sturdy. Highly resistant to chew damage. If this one wears out or breaks, I’ll absolutely get another one.
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Reviewed in the United States on April 20, 2026
G
Verified Purchase
Grant
Boise, US
★★★★★ 4
Puppy interactive toy
Color: Orange, Color: Orange
It’s a great toy as it keeps my 5 month old puppy very entertained! It is pretty hardy and made of good material as she tries to throw it around and chew it. She does swing it around and the hard part will hit her. She doesn’t seem bothered by it tho lol good size and minimum noise When I first introduced her to it she was a little scared but now she gets excited to play with it once it finishes charging.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 2, 2026

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