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Ships within 48 hours · Estimated delivery Aug 25 - Aug 30
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Description
Supertech 2011+ Mini Cooper R56 N18B16A/N18B16C Black Nitrided Intake Valve - Set of 8Supertech uses over 20 years of manufacturing experience to design and produce their Valves. Intensive testing and working closely with engine builders provides continuous improvements and provides the market with the best possible product for every application. High flow rate, durability and quality are all of great concern. Supertech understands that each motor is unique in its requirement and demands. There fore Supertech offers valves in a range
Supertech uses over 20 years of manufacturing experience to design and produce their Valves. Intensive testing and working closely with engine builders provides continuous improvements and provides the market with the best possible product for every application. High flow rate, durability and quality are all of great concern.Supertech understands that each motor is unique in its requirement and demands. There fore Supertech offers valves in a range of materials to suit any motor.
* Stainless - Made as a one piece forged valve for higher strength and reliability. Supertech uses mostly EV8 (21-4N) for Intake and Exhaust Valves, however there are other alloys that are used with different heat treatments to manufacture Valves for specific applications.
To address the issue of high heat, Supertech uses two different types of coatings:
Chrome Coating - Widely used in performance valves
Black Nitride - This is a hardening treatment that provides a smooth surface then chromed valves and produces less friction between stem and guide.
* Inconel 751 - Nickel Base Alloy - Nickel base alloy is used for exhaust valves that reach very high temperatures, such as those in turbo or supercharged applications.
Supertech Valves are sold *Per Valve*. For Example, when order for a Model that requires 16 Valves, order Quantity: 16
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.7 ★★★★★
Based on 8 reviews
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Product Reviews
★★★★★ 5
Excellent value
Size: 13, Color: Brown
These boat shoes are great, they fit a 13W comfortably, for the the price my expectations were not high, but I was wrong, they look good and the soles are real rubber they fit well, I would definitely recommend these, very comfortable.
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Reviewed in the United States on April 20, 2026
★★★★★ 5
Good value and comfortable
Size: 8, Color: Khaki Brown
I'm going to give these shoes a 5 star. They look good, fit well and are very comfortable. They are not leather, but they look and feel more like leather than most low-priced real leather shoes. I bought them to wear around the house and in the yard and they are perfect for that. I am going to swap the weird looking partial laces for a good pair of leather laces. Good value received for money spent.
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Reviewed in the United States on March 27, 2026
★★★★★ 4
Comfortable and durable.
Size: 8.5, Color: Brown
Comfortable shoes. 6 months later they have worn pretty well.i usually wear 2 or three times a week.
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Reviewed in the United States on December 17, 2025
★★★★★ 1
Way, way, way too narrow
Size: 11, Color: Brown
Absurdly, uselessly narrow. I can't get my toes past the opening, although the length appears to be close to correct. A 8 year old might be able to get into my size 11s and flop around in them, but not a grown up.
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Reviewed in the United States on May 31, 2026
★★★★★ 5
Nice men’s shoes
Size: 9.5, Color: Khaki Brown
I bought these shoes while costuming a show at the local community theater. The man who wore them said that they were comfortable and easy to get on. They came exactly as described and pictured.
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Reviewed in the United States on May 21, 2026