Skunk2 Alpha Series intake and exhaust valve set for the Honda K20C1 engine found in the 2017-up Civic Type R, configured for standard compression. The valves are forged one-piece from HNV3 martensitic steel (intake) and EV8 austenitic steel (exhaust), heat-treated and hard-chrome plated with airflow-optimized head profiles. Sold as a complete valve set.
Specifications
| Type | Engine valve set |
| Series | Alpha Series (standard compression) |
| Engine | Honda K20C1 (Civic Type R) |
| Head Diameter | 35mm intake / 29mm exhaust |
| Material | HNV3 / EV8 one-piece forged, hard-chrome plated |
| Part Number | 310-05-2000 |
Shipping
- In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Backordered items ship as soon as stock lands — contact us for lead times.
- International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.
Returns
- 30-day returns on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
- Installed or used parts can’t be returned — confirm fitment before you install.
- Special orders and custom items are final sale.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Refund Policy
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