Manley 11667B-8 Race Master Exhaust Valves 1.575" Bead Loc Chrysler HEMI 5.7L

Built to the exacting standards Manley Performance is known for, these valves are purpose-built for bracket racing, drag racing, and oval track applications, making them an ideal upgrade for high-performance street and competition builds operating under 8,000 RPM.

Key Features:

• High-Grade Stainless Steel Construction: Exhaust valves are manufactured from XH-426 stainless steel, delivering superior heat resistance and long-term durability under extreme conditions
• Chrome Stems and Hard Tips: Chrome-plated stems and hardened valve tips provide enhanced wear resistance and extended service life
• Swirl Polished Underhead: The area beneath the valve head is swirl polished to promote smooth airflow and reduce turbulence at the port
• Fully Machined Combustion Face: Each combustion face is precision machined for optimized sealing and combustion efficiency
• Race Master (Straight Stem) Profile: The straight-stem Race Master design is ideal for performance engines requiring reliable valve geometry under high load
• Bead Loc Groove (B/L): Features a single-radius Bead Loc groove — requires use of Manley Bead Loc retainers (Manley P/N 13093-16); not compatible with standard factory keepers
• Recommended for Alcohol Engines: These exhaust valves are specifically recommended for engines running alcohol-based fuels

Manley Performance Race Series valves represent a proven solution for engine builders seeking reliability and performance in demanding racing environments. The 11667B-8 is the Bead Loc groove variant of the 5.7L HEMI exhaust valve lineup, ensuring proper retainer engagement and secure valve lock retention at elevated RPM.