Skunk2 Alpha Series Valves – Honda K20C1 (35mm Intake / 29mm Exhaust)

The Skunk2 Alpha Series Valve Set for Honda K20C1 engines delivers race-ready performance, durability, and precision for both street and track applications. Designed as a direct replacement for OEM valves, this set of 16 valves (8 intake / 8 exhaust) provides superior heat resistance and strength — ideal for high-performance and forced induction engines.

Each valve is crafted from premium stainless steel forgings using advanced metallurgy: EV8 stainless steel for the intake valves and HNV-3 high-temperature alloy for the exhaust valves. This combination ensures exceptional resistance to heat, wear, and fatigue under the extreme conditions typical of K20C1 engines, including turbocharged applications.

Precision CNC machining ensures exact dimensions and flow optimization, while hardened valve tips improve long-term durability against valve lash adjustment wear. The result is a lightweight, high-strength valvetrain component that supports increased RPM, improved airflow, and extended service life.

Key Features:

• Set of 16 Valves (8 intake / 8 exhaust)

• Intake Valves: 35mm – EV8 stainless steel for strength and flow efficiency

• Exhaust Valves: 29mm – HNV-3 stainless steel for high heat resistance

• Hardened Valve Tips for added durability and reduced wear

• Precision CNC Machined for optimal flow and sealing performance

• Direct OEM Replacement – no modifications required

• Designed for High-RPM and Turbocharged Applications

• Excellent Strength-to-Weight Ratio for improved valvetrain stability

• Ideal for Street, Track, and Forced Induction Builds

Technical Specifications:

• Application: Honda K20C1

• Intake Valve Diameter: 35mm

• Exhaust Valve Diameter: 29mm

• Compression: Standard

• Material (Intake): EV8 stainless steel

• Material (Exhaust): HNV-3 heat-resistant stainless steel

• Tip Treatment: Hardened for long-term wear protection

• Quantity: Set of 16 (8 intake / 8 exhaust)

• Compatibility: OEM retainers, keepers, and valve seats

Vehicle Fitment:
Compatible with:

• Honda K20C1 (as found in: Civic Type R FK2/FK8/FL5, and related platforms)

Included:

• (8) 35mm EV8 Stainless Steel Intake Valves

• (8) 29mm HNV-3 Stainless Steel Exhaust Valves

• (1) Installation Guide