Ferrea 1999 Yamaha YZ 400F 5 Valve 27.99mm Head Dia Competition Outer Intake Valve - Set of 2

If you're rebuilding the top end of your 1999 Yamaha YZ 400F, especially if you're aiming for improved performance from its 5-valve head, these Ferrea competition outer intake valves are a solid choice. They are designed to handle the demands of a performance-oriented engine, ensuring reliable operation when you need it most.

Ferrea is known for making well-built valvetrain components, and these intake valves are no exception. They feature a 27.99mm head diameter, which is specific to the YZ 400F's 5-valve configuration. Using valves made to precise specifications helps ensure proper sealing and airflow, which are critical for getting the most out of your engine.

This set includes two outer intake valves, ready to be installed as part of your engine rebuild. Proper installation is key, so be sure to follow the manufacturer's guidelines for seating and valve lash adjustment.