Brian Crower 30mm Exhaust Valve Set (8pcs) Honda Civic Si 2006-2011 | BC3041

Fitment

• Honda Civic Si (2006–2011 K20Z3)
• Acura RSX Type-S (K20A2)
• Acura TSX (K24A2 heads in hybrid builds)
• Other K20/K24 hybrid and performance builds

The Brian Crower BC3041 Exhaust Valve Set is a performance valvetrain upgrade designed for Honda and Acura K-series engines, including K20A2, K20A, and K20Z3 applications. This is the standard 30mm exhaust valve set, intended as a high-strength replacement or upgrade over OEM components for engines operating under higher RPM, boost, or aggressive cam profiles.

It’s commonly used in built K-series heads where reliability, heat resistance, and consistent airflow become critical under performance conditions.

Key Features & Benefits

• Set of 8 exhaust valves (full engine set)
• Standard 30mm head diameter (OEM-size replacement)
• High-strength stainless steel construction for durability
• Friction-welded Stellite tips for extreme heat resistance
• Undercut stem design reduces weight and improves airflow
• Swirl-polished finish for smoother gas flow and efficiency
• Designed for high RPM and performance engine builds

Performance Advantages

• Improved exhaust flow compared to worn OEM valves
• Better resistance to heat and detonation in tuned engines
• Reduced valvetrain mass for higher RPM capability
• Improved combustion chamber evacuation
• Stronger durability for forced induction or aggressive NA builds

Important Notes

• Standard-size valves = no machining required in most OEM rebuilds
• Must be installed with proper valve job and seating
• Recommended for performance or rebuilt heads, not casual stock replacement
• Should be paired with upgraded springs/retainers in high-RPM builds

Why Choose BC3041?

Brian Crower valvetrain components are widely used in Honda performance engines because they offer:

• Strong heat resistance for high RPM use
• Reliable stainless construction for boosted applications
• Improved airflow characteristics over stock components
• Proven durability in K-series engine builds