Ferrea Intake Valve Set 1.9in Head 0.31in Stem 84-04 Harley

Competition intake valve engineered for reliable valve function—this Ferrea Competition Intake Valve for 84–04 Harley-Davidson Evolution applications combines a 1.9in head and 0.31in stem diameter to support consistent sealing and repeatable performance under track and street conditions.

Designed and produced by Ferrea, a brand known for precision valvetrain components, this item is offered as a set of 2 valves intended for direct use in eligible Evolution engines.

• Ferrea brand — Indicates manufacturer expertise in high-quality valvetrain components, supporting consistent manufacturing tolerances and material control.
• Application: 84–04 Harley-Davidson Evolution — Matches the specified Evolution engine range to ensure compatibility with the intended engine family.
• Head diameter: 1.9in — Larger head area supports increased intake flow potential relative to smaller heads, aiding cylinder filling where valve sizing is a limiting factor.
• Stem diameter: 0.31in — Stem size controls guide fit and stiffness; the specified 0.31in diameter provides defined clearance for valve guides and contributes to stable valve motion.
• Type: Competition intake valve — Built to competition-oriented profiles and durability considerations appropriate for higher-load or performance-focused valve events.
• Quantity: Set of 2 — Supplied as a matched pair to facilitate consistent installation and balancing across intake ports.

Use this Ferrea competition intake valve when replacing worn intake valves or when assembling performance-oriented cylinder heads for compatible Harley-Davidson Evolution engines. The specification-driven dimensions allow technicians to verify fitment against existing guides, seats, and valve cover clearances during head work.