Manley 11584-8 Race Flo Intake Valve 2.100" Head +0.200" Oversize Stem

Engineered for high-performance and racing engine applications, Manley Race Flo valves are designed to maximize airflow into the combustion chamber, supporting higher horsepower and improved engine efficiency.

Key Features:

• 2.100" head diameter for optimized intake flow
• +0.200" oversize stem for use with reamed or worn valve guides
• Race Flo profile — backcut and radiused for superior airflow characteristics
• High-quality one-piece construction from premium steel for durability under high-RPM and high-temperature conditions
• Designed as a direct performance upgrade or replacement for worn OEM valves

Manley Performance has been a trusted name in professional racing and high-performance engine building for decades. The Race Flo valve line is a staple in circle track, drag racing, and street/strip builds where maximum flow and long service life are critical. The +0.200" oversize stem ensures a precise fit when guides have been reamed to correct wear, making these valves ideal for engine rebuilds seeking both restored function and improved performance.