Ferrea Honda D16Z6/Y5/Y7/Y8 27mm 5.46mm 22 Deg Flo +1mm Flat Head 5000 Series Exh Valve - Set of 8

These Ferrea 5000 Series exhaust valves feature a 27mm head diameter and a 5.46mm stem, with a 22-degree face angle. They are designed as a +1mm oversized option, meaning they are slightly larger than stock to help seal worn valve seats or to improve flow in a performance build for your Honda D16Z6, D16Y5, D16Y7, or D16Y8 engine.

Constructed from high-grade stainless steel, these valves are built to handle the heat and stress of combustion. The Flo +1mm design refers to the slightly larger head size and the specific angle of the valve face, which is optimized for sealing and flow. When rebuilding a D-series cylinder head, using valves like these can make a notable difference in compression and overall engine performance.

This set includes eight exhaust valves, enough for a complete cylinder head installation on your D-series engine. Ensure you have the correct valve spring retainers and seals to match these valves for a proper installation.