Manley 11478HTB-8 Titanium Intake Valve Set Head Length - 2.100in 5.140in

Featuring a 2.100-inch head diameter, 5.140-inch overall length, and 0.3415-inch stem diameter, these valves are engineered for applications demanding superior strength with minimal valvetrain mass.

Key Features:

• Titanium Construction: Manufactured from premium titanium alloy, delivering exceptional strength-to-weight ratio over conventional stainless steel valves
• One-Piece Forged Design: Forged construction with continuous grain flow — not a head welded to a stem — maximizing structural integrity and fatigue resistance
• Higher Hardness Tip (HTB): Upgraded hardened valve tip for improved wear resistance under aggressive valvetrain loads
• Bead Loc® Keeper Groove: Bead Loc® groove design provides a more secure lock retention, critical in high-rpm racing applications
• CNC Machined to Exacting Tolerances: Machined in state-of-the-art CNC turning centers and valve stem grinders for precise, consistent dimensions
• Micro-Polished Finish: Jewel-like micro-polished surface eliminates stress risers and enhances fatigue strength
• Rigorous Quality Control: Every valve passes a stringent final inspection to ensure uncompromising performance and reliability
• Head Diameter: 2.100 in.
• Overall Length: 5.140 in.
• Stem Diameter: 0.3415 in.

Manley titanium intake valves are ideal for drag racing, road racing, and high-performance street builds where reduced valvetrain mass enables higher rev limits, quicker valve action, and increased throttle response. Note: Bead Loc® valve locks are required. Verify guide clearances prior to installation, as Manley recommends checking and correctly sizing guides to match the valve stem diameter.