Ferrea Intake Valve Set for Nissan RB25DET 34.12mm 5.97mm 86.7mm 15 Deg S-Flo

Ferrea Intake Valve Set for Nissan RB25DET — S-Flo Performance Brand: Ferrea · Fitment: Nissan RB25DET Upgrade your RB25DET cylinder head with this precision-engineered Ferrea intake valve set. Designed for improved flow, durability and street-to-track reliability, these S-Flo intake valves deliver measurable gains in response and efficiency while maintaining OEM compatibility. Valve head diameter: 34.12 mm Stem diameter: 5.97 mm Overall length: 86.7 mm Seat angle: 15° (S-Flo profile) Pack: Set of 12 (complete intake set for a 6‑cylinder RB25) Ferrea S-Flo valves use optimized head contours and precision stem tolerances to reduce flow separation and improve sealing under boost. Built from high-strength materials and finished for smooth operation, they offer superior fatigue life and heat resistance compared to stock valves. Ideal for enthusiasts building high-performance RB25DET engines for street, track, or drifting applications. Direct replacement dimensions ensure easy installation and compatibility with standard valve guides and springs when used within recommended specifications. Benefits: increased airflow, improved throttle response, enhanced durability, and reliable performance under elevated boost and RPM.