SKU: 90916275367

Supertech - Honda H23 Exhaust valve 30.00x6.546x102.7mm / SS/ Blk. Nitrided/ + 1mm

Sale price$21.08 Regular price$23.42
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Ships within 48 hours · Estimated delivery Aug 14 - Aug 19

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Description

Supertech - Honda H23 Exhaust valve 30.00x6.546x102.7mm / SS/ Blk. Nitrided/ + 1mmSupertech Honda H23 Exhaust valve 30. 00x6. 546x102. 7mm SS Blk. Nitrided + 1mm 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 - Honda H23 Exhaust valve 30.00x6.546x102.7mm / SS/ Blk. Nitrided/ + 1mm

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.
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: 90916275367

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Amazon Customer
Battle Creek, US
★★★★★ 5
Great kids sneakers
Size: 4 Big Kid, Color: Grey/Green
My kid loves the sneakers they are holding up well and the fit is true to size.
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Reviewed in the United States on March 30, 2026
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H.Kim21
Omaha, US
★★★★★ 5
Truly fits wide feet!!
Size: 6 Wide Big Kid, Color: Purple/Turq
Runs true to size in length, and the wide is actually wide enough for my 10yo's duck feet!! My daughter wears a 5.5/6 so we ordered 6wide - great fit and nice colors! We love the Saucony sneakers that have the alternative closure aka velcro straps bc my girls still struggles tying laces tight!!
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Reviewed in the United States on October 1, 2025
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kcato
Louisville, US
★★★★★ 4
Pretty Good
Size: 12.5 Wide Big Kid, Color: Purple/Turq
These shoes are pretty good. The material has broken down faster than I anticipated but they have great support.
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Reviewed in the United States on January 7, 2026
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Stephanie I.
Lexington, US
★★★★★ 5
Great toddler shoe
Size: 11.5 Big Kid, Color: Black/White
Great shoes for toddlers. The extra Velcro across the tongue makes sure the shoes start secured
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Reviewed in the United States on December 1, 2025
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Mark
Whiting, US
★★★★★ 5
Buy These!
Size: 2 Big Kid, Color: Purple/Turq
Absolutely perfect. Great fit and style. My 3rd grade runs on a very competitive cross country team and these have help up all season and for general everyday wear.
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Reviewed in the United States on October 14, 2025

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