Manley 11920H-8 Titanium Intake Valves 2.400 in. Head Diameter Higher Hardness

Featuring a 2.400-inch head diameter, 0.3415-inch stem diameter, and 6.600-inch overall length, these valves are purpose-built for demanding race and high-performance engine builds.

The "H" suffix designates higher hardness titanium material, making these valves especially suitable for applications where increased wear resistance is required at the valve tip and seat contact areas.

Key Features:

• One-Piece Forged Construction: Forged from a single billet with controlled grain flow — not a head welded to a stem — for maximum structural integrity
• Higher Hardness Titanium Alloy: Specially formulated titanium alloy balances hardness, ductility, and fatigue strength across the full operating temperature range
• Reduced Valvetrain Mass: Titanium construction significantly cuts valve weight, enabling quicker valve action, higher RPM capability, and improved throttle response
• High-RPM / Extended High-RPM Capable: Designed for sustained high-RPM operation and compatibility with aggressive camshaft profiles
• CNC Machined to Tight Tolerances: Machined on state-of-the-art CNC turning centers and valve stem grinders for precision fit and consistent performance
• Rigorous Quality Inspection: Every valve undergoes a stringent final inspection process before leaving the factory
• Bead Loc® or Conventional Keeper Grooves: Available with standard square keeper grooves or Manley's Bead Loc® single radius keeper grooves

Specifications:

• Head Diameter: 2.400 in.
• Stem Diameter: 0.3415 in.
• Overall Length: 6.600 in.
• Material: Higher Hardness Titanium ("H" suffix)

Important Note: Part numbers without a "T" suffix do not include a hardened tip — tip protection is required. Use Manley wear cap P/N 42104 or 42104TM to protect valve tips.