Manley 12173B-8 Titanium Intake Valve Set for Big Block X20 - 2.450" Head 0.3110" Stem

The Manley 12173B-8 is a premium set of eight titanium intake valves engineered specifically for Big Block X20 cylinder head applications. These high-performance valves feature a 2.450-inch head diameter with a 0.3110-inch stem diameter and 6.160-inch overall length, designed to deliver exceptional airflow and durability in demanding racing environments.

Key Features:

• Titanium construction for superior strength-to-weight ratio and high-temperature performance
• Bead Loc groove design for secure valve keeper retention
• 2.450" head diameter optimized for maximum airflow
• 0.3110" precision-ground stem diameter
• 6.160" overall length
• Swirl polished and fully machined surfaces for reduced drag
• Ideal for high-RPM racing applications above 8000 RPM
• Set of 8 valves

Manley Performance titanium valves are manufactured to exacting tolerances and are designed to withstand extreme combustion pressures and temperatures. The lightweight titanium construction reduces valvetrain mass, allowing for more aggressive cam profiles and higher engine speeds while maintaining exceptional reliability. These valves are the preferred choice for serious racers who demand maximum performance and durability from their Big Block engines.