Supertech Black Nitride Exhaust Valve - +1mm Oversize - Set of 8 | 1989-1993 Mazda Miata (MAEVN-1102-8)
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: 27.20mm(+1.0)
- 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.
