Acura C/6 28mm Exhaust Valves

The Acura C/6 28mm exhaust valves from FERREA represent precision-engineered components designed for Honda B-Series engine builders and performance enthusiasts seeking OEM-quality or upgraded flow characteristics. This set of eight stainless steel exhaust valves is purpose-built to replace worn or damaged factory valves in Acura and Honda applications, delivering consistent sealing, durability, and thermal stability under high-RPM and boost conditions. Whether you're rebuilding a cylinder head or upgrading to improve exhaust scavenging efficiency, these valves are essential to restoring or enhancing engine breathing.

Each exhaust valve features a 28mm head diameter with a 5.45mm valve stem and 102.50mm overall length, engineered to match OEM specifications while utilizing FERREA's premium 6000-series stainless steel construction for superior corrosion resistance and heat tolerance. The stainless material resists oxidation and thermal fatigue far better than mild steel alternatives, critical for exhaust valves exposed to continuous temperature cycling and combustion byproducts. This manufacturing choice ensures a longer service life and more reliable sealing geometry, reducing blow-by and maintaining compression integrity across thousands of engine cycles.

Technicians and engine builders working on Honda B-Series platforms—including turbocharged and naturally aspirated builds—will find these valves indispensable for complete cylinder head restoration, performance upgrades, or race engine assembly. Proper valve seat machining and installation torque specifications are required during fitment to ensure optimal sealing and prevent micro-movement during operation. For anyone serious about engine reliability, fuel economy, and emissions compliance, upgrading to FERREA's precision-manufactured exhaust valves guarantees the foundation for consistent performance.