Inconel Exhaust Valves - Oversize +1mm for a Mini R53 (only 6 pieces)

INCONEL BLACK NITRIDE EXHAUST VALVES for Mini R53 (only 6 pieces) Supertech's Black Nitride exhaust valves for the Mini R53 are manufactured from an Inconel-Nimonic nickel superalloy and finished with a proprietary Black Nitride surface treatment. This coating provides superior hardness, reduced friction, and enhanced corrosion resistance compared to standard standard valves. Each valve is precision-machined to OEM tolerances and undergoes rigorous quality control including dimensional inspection, hardness testing, and surface finish verification. The result is a valve that delivers consistent, reliable performance in both street and competition Mini R53 builds. KEY FEATURES Inconel-Nimonic superalloy base material for extreme-EGT strength Black Nitride surface treatment for reduced friction and wear resistance Precision-ground 5.92mm stem and flat face for optimal sealing Swirl-polished underhead for improved exhaust flow 24.20mm head diameter, compatible with standard valve guides and seats Single Groove lock groove design for secure retention Oversize +1.0mm valve diameter APPLICATIONS Ideal for naturally aspirated, turbocharged, and supercharged Mini R53 builds where exhaust valve durability is critical. The Black Nitride coating excels in high-EGT environments and is particularly well-suited for engines running lean air-fuel

Inconel Exhaust Valves - Oversize +1mm for a Mini R53 (only 6 pieces)

INCONEL BLACK NITRIDE EXHAUST VALVES for Mini R53 (only 6 pieces)

Supertech's Black Nitride exhaust valves for the Mini R53 are manufactured from an Inconel-Nimonic nickel superalloy and finished with a proprietary Black Nitride surface treatment. This coating provides superior hardness, reduced friction, and enhanced corrosion resistance compared to standard standard valves.

Each valve is precision-machined to OEM tolerances and undergoes rigorous quality control including dimensional inspection, hardness testing, and surface finish verification. The result is a valve that delivers consistent, reliable performance in both street and competition Mini R53 builds.

KEY FEATURES

  • Inconel-Nimonic superalloy base material for extreme-EGT strength
  • Black Nitride surface treatment for reduced friction and wear resistance
  • Precision-ground 5.92mm stem and flat face for optimal sealing
  • Swirl-polished underhead for improved exhaust flow
  • 24.20mm head diameter, compatible with standard valve guides and seats
  • Single Groove lock groove design for secure retention
  • Oversize +1.0mm valve diameter

APPLICATIONS

Ideal for naturally aspirated, turbocharged, and supercharged Mini R53 builds where exhaust valve durability is critical. The Black Nitride coating excels in high-EGT environments and is particularly well-suited for engines running lean air-fuel

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Immediate payment is required upon selecting "Buy It Now" or upon checking out through the cart.

We accept payment via U.S. PayPal accounts and all Major Credit Cards, Debit Cards & Google Pay.

We are legally required to collect sales tax in those states and localities where we maintain a physical presence (nexus).

The applicable amount of sales tax charged to an order will be calculated based on the shipment destination's state and local sales tax laws.

Thank you for shopping with us on eBay!

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