SKU: 57351469734

Supertech BMW S54 24v Exhaust Valve Set | Black Nitrated | Triple Groove

Sale price$119.70 Regular price$133.00
Save 10%

Pay in installments of $33.25 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 20 - Aug 25

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Supertech BMW S54 24v Exhaust Valve Set | Black Nitrated | Triple GrooveSupertech Performance BMEVN 1040 BMW M3 S54 Exhaust valve 30. 5x5. 95x126. 10mm SS Black Nitrided Stock size 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

Supertech Performance BMEVN-1040 BMW M3 S54 Exhaust valve 30.5x5.95x126.10mm - SS/Black Nitrided/Stock size

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.

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:
  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: 57351469734

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.6 ★★★★★
Based on 23 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
R
Verified Purchase
rez wolfe
Fort Morgan, US
★★★★★ 5
Great undershirt!
Color: White, Size: Medium
Love the fabric, it's a great undershirt for year round comfort at the office.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 11, 2026
S
Verified Purchase
Steven & Diane
Draper, US
★★★★★ 4
I have special needs so, please read my review.
Color: White, Size: X-Large
Edit I decided to wear it inside under my clothes as a liner, it shrank too short so not it is uncomfortable to tuck in after I hand washed and dried on delicate until half dry and hung. I will start for anyone that need a soft first layer try this shirt, it fits nicely and it doesn't pull under my arms, I have larger bust measurements compared to by rib cage. It is soft out of the bag and first wash came out nice ,( hand wash) The shirt is a perfect thickness for me! I loved it so much, EXCEPT for the inner arm seam, I so wish the arms were seamless, it was painful for ME, I have Fibromyalgia and this felt like torture by the end of the day, this was too bad for me because otherwise the shirt is GOLD. Buy the shirt I am going to try to scrub the seam and see if I can soften it up a bit . Maybe this company has a seamless version, I would love to know this.. I cannot comment of durability and washability,
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 27, 2024
D
Verified Purchase
Drazil1812
Lake Worth, US
★★★★★ 5
My favorite undershirt with boleros & crop tops
Color: Black, Size: Small
Not overly thick or thin - it’s just right for staying warm and wearing under crop tops and boleros. Form fitting but not uncomfortably snug. Great quality! I now own 3 and might get one more since I bought a bunch of new crop tops and boleros.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 3, 2025
S
Verified Purchase
shoehog
Carnegie, US
★★★★★ 5
A T-Shirt to live in
Color: White, Size: X-Small
This crew neck if super soft and work really well under cashmere sweaters. Wish they came in more colors
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 12, 2026
J
Verified Purchase
Janice Wu
New York, US
★★★★★ 5
Great so far
Color: White, Size: X-Small
Loving this shirt so far, i just got it. It is soft and comfortable and I wish for more colors I wonder how it will do in the wash
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 12, 2025

recommand products