Supertech Performance MCIVN-1301S Black Nitrided Intake Valve for Mini Cooper - R56 N18

The Supertech MCIVN-1301S is a high-performance black nitrided intake valve manufactured from enhanced EV8 (21-4N) stainless steel, designed specifically for 2011+ Mini Cooper R56 models with N18B16A and N18B16C engines. This premium valve delivers the strength and durability required for high-performance and racing applications.

Key Specifications:

• Head Diameter: 29.80mm (standard size)
• Stem Diameter: 4.96mm
• Length: 95mm
• Single groove design
• Black nitride coating for enhanced wear resistance

Production begins with one-piece forging where the valve head is forged using a slow two-step process to maintain proper material grain flow, then CNC machined in several steps to ensure precision. The valve undergoes heat treatment for stress relieving, followed by nitride hardening treatment, additional grinding, and Supertech's patented Superfinishing process to eliminate imperfections. Each valve tip is hardened above 52 HRc for maximum durability.

Features & Benefits:

• Highest grade steel available provides exceptional strength to withstand demanding applications
• Black nitride coating combined with Superfinish reduces surface roughness to 1/3 of standard chrome valves
• Design maximizes durability with higher resistance to fatigue and tensile strength
• Strict dimensional tolerances ensure better sealing, improved performance, and easier installation
• Ideal for naturally aspirated, turbocharged, and high-RPM racing engines

This listing is for a single intake valve.