Supertech black nitride exhaust and intake valves for F20/F22 Honda S2000. These valves are available in various sizes to match your head diameter. Sold as a set of 8 or individually as needed. Please do all your research and consult your engine builder if necessary! Black nitride valves are made from one piece forged stainless steel then go through a special hardening process to lessen the friction between the valve and guide.
Vehicle Fitment:
2000-2009 Honda S2000
F20/F22
| Fitment: | Size: | Includes: | Part Numbers: |
| Exhaust | Standard 31.00mm Dish • Stem Diameter 5.45mm • Length 108.65mm |
8 Valves | HEVN-1030D-8 |
| 1 Valve | HEVN-1030D-1 | ||
| Exhaust | Standard 31.00mm Flat • Stem Diameter 5.45mm • Length 108.65mm |
8 Valves | HEVN-1030F-8 |
| 1 Valve | HEVN-1030F-1 | ||
| Exhaust | +.5mm Oversize 31.50mm Flat • Stem Diameter 5.45mm • Length 108.65mm |
8 Valves | HEVN-1033F-8 |
| 1 Valve | HEVN-1033F-1 | ||
| Intake | Standard 36.00mm Dish • Stem Diameter 5.48mm • Length 109.85mm |
8 Valves | HIVN-1030D-8 |
| 1 Valve | HIVN-1030D-1 | ||
| Intake | Standard 36.00mm Flat • Stem Diameter 5.48mm • Length 109.85mm |
8 Valves | HIVN-1030F-8 |
| 1 Valve | HIVN-1030F-1 | ||
| Intake | +.5mm Oversize 36.50mm Dish • Stem Diameter 5.48mm • Length 109.85mm |
8 Valves | HIVN-1033D-8 |
| 1 Valve | HIVN-1033D-1 | ||
| Intake | +.5mm Oversize 36.50mm Flat • Stem Diameter 5.48mm • Length 109.85mm |
8 Valves | HIVN-1033F-8 |
| 1 Valve | HIVN-1033F-1 | ||
| Intake | +.5mm Oversize 37.00mm Dish • Stem Diameter 5.48mm • Length 109.85mm |
8 Valves | HIVN-1035D-8 |
| 1 Valve | HIVN-1035D-1 |
The “Black Nitride” is a hardening treatment that is applied to the whole valve whereas the chrome coating is only applied to the stem. The microhardness is higher than the stainless steel base material, keeping good ductility beneath the hard nitrided layer. Microhardness is 800HV minimum.
The Black Nitride surface finish is smoother than with chromed stems, having less friction between stem and guide. The higher the engine speed the bigger the power loss due to internal engine friction! The Black Nitride reduces this power loss due to less valve-guide friction.
Note:
Images are for reference. Some Supertech parts have varying part numbers with slashes, dashes, spaces or quantities. Some of these valve part numbers coincide with K20/K24.
| Select: | Exhaust 31.0mm Dish (Set of 8) (HEVN-1030D-8), Exhaust 31.0mm Dish (1 Single) (HEVN-1030D-1), Exhaust 31.0mm Flat (Set of 8) (HEVN-1030F-8), Exhaust 31.0mm Flat (1 Single) (HEVN-1030F-1), Exhaust 31.5mm Flat (Set of 8) (HEVN-1033F-8), Exhaust 31.5mm Flat (1 Single) (HEVN-1033F-1), Intake 36.0mm Dish (Set of 8) (HIVN-1030D-8), Intake 36.0mm Dish (1 Single) (HIVN-1030D-1), Intake 36.0mm Flat (Set of 8) (HIVN-1030F-8), Intake 36.0mm Flat (1 Single) (HIVN-1030F-1), Intake 36.5mm Dish (Set of 8) (HIVN-1033D-8), Intake 36.5mm Dish (1 Single) (HIVN-1033D-1), Intake 36.5mm Flat (Set of 8) (HIVN-1033F-8), Intake 36.5mm Flat (1 Single) (HIVN-1033F-1), Intake 37.0mm Dish (Set of 8) (HIVN-1035D-8), Intake 37.0mm Dish (1 Single) (HIVN-1035D-1) |
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