Supertech Black Nitride Exhaust Valve - Set of 8 | 1989-1993 Mazda Miata (MAEVN-1100-8)

Supertech
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1989-1993 Mazda Miata Black Nitride Exhaust Valves by Supertech

Supertech exhaust valves are made from EV16 (21-8N) or EV8-Nb/w for greater strength at higher temperatures.

Features

  • Head Diam: 26.20mm (std)
  • Material: Stainless Steel 23-8N
  • Groove Type: Single Groove
  • Length: 105.35mm
  • Stem Diam: 5.94mm
  • 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

Applications

  • 1989-1993 Mazda Miata

What's In The Box?

  • 8 - Exhaust Valve

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.

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