Skunk2 Alpha Series intake and exhaust valve set for the Honda D-series engine, forged one-piece from HNV3 martensitic steel (intake) and EV8 austenitic steel (exhaust), heat-treated and hard-chrome plated with airflow-optimized head profiles. Each valve runs 3 to 10 grams lighter than stock for improved valvetrain stability. Sold as a complete valve set.
| Type | Engine valve set |
| Series | Alpha Series (standard compression) |
| Engine | Honda D-series |
| Head Diameter | 30.00mm intake / 26.00mm exhaust |
| Stem Diameter | 5.48mm intake / 5.45mm exhaust |
| Overall Length | 118.5mm intake / 116mm exhaust |
| Material | HNV3 / EV8 one-piece forged, hard-chrome plated |
| Quantity | Full valve set |
| Part Number | 310-05-1600 |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1992-2000 | Honda | Civic | EX |
| 1992-1995 | Honda | Civic | Si |
| 1993-1997 | Honda | Civic del Sol | Si |
Shipping: In-stock orders placed before 3 PM EST ship the same day, and everything else ships within 24 hours. Standard, expedited, and overnight options are available at checkout. Backordered items ship as soon as we get them back in stock. Contact us for lead times. See the full Shipping Policy.
Returns: 30-day returns on new, unused items in original packaging. See the full Refund Policy.
