GSC Exhaust Valve 30mm Standard Set (Honda K-Series DOHC VTEC) GSC2041-8

GSC Exhaust Valve Set – Honda K-Series VTEC – 30mm STD – Set of 8 – GSC2041-8

High-performance valves engineered for heat, flow, and longevity

This set of eight standard-size 30mm exhaust valves from GSC Power Division is built for Honda K-Series DOHC VTEC engines. Each valve features a 5.5mm stem and measures 108.80mm in overall length, designed to deliver maximum flow and durability under extreme operating conditions.

Developed using advanced 3D modeling and simulation tools, GSC’s valve heads are optimized for strength and airflow. Each prototype is flow-tested in its specific application to ensure top-tier performance. The result is a high-flow valve with reduced face distortion—leading to better sealing and consistent operation throughout its service life.

Key Features:

• Swirl-polished heads improve airflow across the valve surface
• Backcut design reduces weight for higher RPM and aggressive cam compatibility
• Micro-polished stems minimize oil retention and drag for smoother movement
• Exhaust valves made from modified 23-8n stainless for superior heat resistance and durability
• Valve tips are hardened or fused with stelite wafers for extended wear life
• Tip heights are optimized to reduce setup time and maintain proper valvetrain geometry
• Keeper grooves are refined to balance spring pressures and reduce the need for shims
• Compatible with OEM or upgraded keepers/locks (reuse of old locks not recommended for performance builds)

Fitment:

- 2002-2006 Acura RSX Type-S (K20A2, K20Z1)
- 2002-2005 Honda Civic Si (K20A3)
- 2006-2011 Honda Civic Si (K20Z3)
- 2004-2008 Acura TSX (K24A2)
- 2003-2007 Honda Accord (K24A4, K24A8)
- 2003-2006 Honda Element (K24A4)
- 2003-2006 Honda CR-V (K24A1)

CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov