Manley Performance Race Master Exhaust Valves (Set of 8): Chrysler 300 (05-08) / Dodge Charger (06-08) / Magnum (05-08)

Manley Performance Race Master Exhaust Valves

Up to 2008 Chrysler HEMI 5.7L V8

11665-8

Overview:

Manley Performance Race Master Exhaust Valves are precision-engineered components designed specifically for Chrysler HEMI 5.7L engines built through 2008. These valves are crafted to withstand the extreme conditions encountered in bracket racing, drag racing, and oval track competition. If you are a performance enthusiast or racer seeking reliable, high-quality exhaust valves that perform consistently at engine speeds up to 8,000 RPM, these valves are an excellent choice.

Built to deliver durability and optimal exhaust flow, these valves help maintain engine efficiency and power output under demanding conditions. Whether you are upgrading your race engine or rebuilding for improved performance, Manley’s Race Master valves provide the strength and precision needed for competitive motorsports applications.

Key Features:

Manley Race Master Exhaust Valves incorporate advanced design and manufacturing techniques to meet the needs of serious racers and performance builders. Key features include:

• Triple groove 1.555-inch valve stem design for enhanced retention and stability under high RPM conditions.
• Constructed from high-strength materials engineered to resist wear, heat, and valve face recession common in racing environments.
• Optimized for Chrysler HEMI 5.7L engines through 2008, ensuring precise fitment and compatibility.
• Designed to support engine operation up to 8,000 RPM, ideal for bracket, drag, and oval track racing.
• Manufactured with tight tolerances to promote consistent valve seating and reliable exhaust flow.
• Set of 8 valves included, covering all cylinders for a complete exhaust valve upgrade.

Construction & Design:

Manley’s Race Master valves feature a robust construction tailored for high-performance exhaust applications. The triple groove stem design enhances valve guide retention and reduces the risk of valve float or misalignment at elevated engine speeds. The valves are precision machined from premium materials selected for their strength and heat resistance, ensuring longevity even under the intense thermal and mechanical stresses of racing.

The 1.555-inch stem diameter balances durability with smooth operation, contributing to improved valve train stability. These valves are engineered to maintain optimal sealing and exhaust flow characteristics, which are critical for maximizing power and engine efficiency in high-RPM environments.

Installation & Fitment:

These exhaust valves are direct replacements for factory components in Chrysler HEMI 5.7L engines built through 2008. They fit standard valve guides and seats designed for this engine family, making installation straightforward for experienced engine builders and machinists. Proper valve job and seat preparation are recommended to ensure optimal sealing and performance.

No modifications to the cylinder head or valve train are required when installing these valves, provided the engine is within the specified application range. These valves are intended for use in performance or race engines and should be installed by professionals familiar with high-performance valvetrain assembly.

What's Included:

• Set of 8 Manley Race Master Exhaust Valves with triple groove 1.555-inch stems

Ideal For:

• Bracket racers seeking durable, high-RPM exhaust valves
• Drag racers requiring reliable valve performance up to 8,000 RPM
• Oval track racers upgrading their Chrysler HEMI 5.7L valvetrain components
• Engine builders focused on race-prepped Chrysler HEMI 5.7L engines through 2008
• Performance enthusiasts aiming for improved exhaust flow and valve durability