SUPERTECH performance exhaust valves MINI Cooper R53 W11B16A

We offer here several kits of SUPERTECH performance exhaust valves for the W11B16A engine. The technical specification is given below.

Choose your kit from the drop-down menus just below the price, by selecting the valve head diameter, the material and the number of keeper grooves you need. The price shown is for a set of 8 valves.

Please note: single-groove valves cannot be fitted with the OEM retainers.

Below are the links (click the images) to the accessories compatible with your MINI W11B16A engine:

Technical specification

• Head diameter: 23.20mm (OEM) or 24.20mm (+1mm) or 25.20mm (+2.3mm) or 25.50mm (+2.3mm) or 27.00mm (+3.8mm)
• Stem diameter: 5.92mm
• Length: 118.37mm
• Material: stainless steel or Inconel
• Keeper grooves: 1 or 3
• References: MCEVN-1004, MCEVI-1007FS, MCEVN-1010FS, MCEVI-1010FS, MCEVI-1012S

SUPERTECH valves are made from a forging which is then CNC machined for optimum precision. They then undergo heat treatment, which varies with the valve application, and are ground again (Super-finishing process). SUPERTECH valves are inspected by various means including ultrasound, X-ray and laser measurement.

For more than three decades SUPERTECH has worked to find the most suitable material for each valve and each application in order to improve reliability. Valves are therefore available in different materials such as stainless steel, Inconel, titanium and sodium, the latter sitting inside the valve stem to give better heat dissipation.