SKU: 59085910197

Supertech - Black Nitride Intake Valves (Set of 10) - 2017-2025 Audi RS3; 2018-2023 Audi TT RS

Sale price$138.96 Regular price$154.40
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Ships within 48 hours · Estimated delivery Jul 21 - Jul 26

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Description

Supertech - Black Nitride Intake Valves (Set of 10) - 2017-2025 Audi RS3; 2018-2023 Audi TT RSSupertech intake valves are made exclusively from an enhanced versions of EV8 (21 4N) steel. This is the highest grade of steel available and provides the strength to withstand just about any application. Valves play a critical role in any performance orientated engine. Upgrading the valves in your VW or Audi engine increases reliability with slow forging processes, upgraded aerospace alloys, CNC machining, and heat treatments to withstand extreme

Supertech intake valves are made exclusively from an enhanced versions of EV8 (21-4N) steel. This is the highest grade of steel available and provides the strength to withstand just about any application.

Valves play a critical role in any performance-orientated engine. Upgrading the valves in your VW or Audi engine increases reliability with slow forging processes, upgraded aerospace alloys, CNC machining, and heat treatments to withstand extreme abuse from high-powered race engines and daily driven road vehicles making beyond factory power levels. The power an engine produces is limited to airflow. As the smallest chokepoint in your cylinder head, performance valves are engineered to increase airflow by limiting turbulence created by valve stem obstruction and careful detailing of the valve head and valve angles.

Features

  • Head Diam: 33.85mm(std)
  • Material: Stainless Steel 21-4N
  • Groove Type: Single Groove
  • Length: 103.9mm
  • Stem Diam: 5.98mm
  • Back-cut angle
  • Undercut stem
  • One piece forged valve (non-magnetic)
  • Magnetic friction welded wafer, Hardened to 52 HRC min
  • Black Nitride for superior hardness keeping core ductility
  • “Superfinish” valve stem with a surface roughness of about 1/3 of a regular valve

Benefits

  • Less Friction
  • Better Flow Rates
  • Better Sealing
  • Improves durability and reduces carbon build up

What's In The Box?

  • 10 - Intake Valves

Warranty

  • Due to the nature of the application, these parts are sold without any express warranty or any implied warranty of merchantability, or fitness for a particular purpose.
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: 59085910197

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BWolfeJR
Louisville, US
★★★★★ 5
I am certainly glad I found them and finally ordered
Size: 10, Color: Ivory/White/British Tan
A bit bulkier than my Stan Smiths Leather versions, but actually more comfortable. They seem to be a bit "clunkier" looking than a streamline Stan Smith, but it's a matter of style. It works for a change of pace. Gets or picks up dirt a bit, but cleans well, except the canvas part. Has lasted almost 6-8 months with very little signs of wear. Feels very secure in any type of weather or condition. Great alternative or addition to having a pair of Stan Smiths.
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Reviewed in the United States on May 12, 2026
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Rilind
Carnegie, US
★★★★★ 5
Amazing shoes
Size: 10.5 Wide, Color: Black/White/Black
Amazing shoes
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Reviewed in the United States on May 31, 2026
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C Knorr
Chelsea, US
★★★★★ 4
Love the look, but Narrow
Size: 10, Color: Marine Blue/Woodbury/Ivory
What is for my son-in-law, he loves them, but had to switch them out twice because they run very narrow. He doesn’t have a wide foot at all so be careful when you purchase. Other than that they are a good looking shoe and he really likes them.
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Reviewed in the United States on February 12, 2026
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Trevor
Natrona Heights, US
★★★★★ 5
Awesome value shoes
Size: 11.5, Color: Ivory/White/British Tan, Size: 11.5, Color: Ivory/White/British Tan
These white Cole Haan shoes are just what I hoped for, the color is a perfect off-white, somewhere between cream and pure white, which gives them a more refined look. The quality feels excellent, they’re very comfortable right out of the box, and the laces feel durable and well-made. They fit true to size with no issues. Based on this experience, I’ll definitely be buying more from this brand in the future especially at this price point.
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Reviewed in the United States on June 18, 2025
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Maribel de Oleo
Waukegan, US
★★★★★ 5
SNEAKERS OF THE GREAT MATERIAL
Size: 9, Color: White/Black/White
THE SNEAKERS ARE CONFORTABLE AND REALLY GOOD MATERIAL FOR THE ALL USE.
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Reviewed in the United States on February 25, 2026

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