Manley Performance Race Flo Intake Valve Set

2011–2024 Chrysler 300, Dodge Challenger, Dodge Charger, Dodge Durango, Jeep Grand Cherokee SRT8, Jeep Wrangler, Ram 2500, Ram 3500, Jeep Grand Wagoneer 6.4L 392 HEMI

Part #: 12330B-8

Overview

The Manley Performance Race Flo Intake Valve Set is engineered specifically for the Chrysler 6.4L (392) HEMI engine, covering model years 2011 through 2024. Designed to meet the rigorous demands of bracket, drag, and oval track racing, this set of eight intake valves delivers exceptional durability and airflow performance. Whether you are building a high-RPM race engine or upgrading your performance build, these valves provide reliable sealing and strength to support aggressive camshaft profiles and engine speeds up to 8000 RPM.

Manley’s Race Flo valves are a trusted choice among racers and enthusiasts who require consistent valve operation under extreme conditions, ensuring your Chrysler 6.4L HEMI performs at its peak during competition or spirited driving.

Key Features

Manley’s Race Flo Intake Valves combine advanced materials and precision engineering to optimize performance and reliability for high-performance Chrysler 6.4L HEMI engines. Key features include:

• Precision-machined 2.140-inch intake valve heads for enhanced airflow and improved combustion efficiency
• Constructed from high-strength, heat-resistant materials designed to withstand high-RPM racing environments
• Optimized valve face and stem design to reduce wear and maintain superior sealing under extreme conditions
• Specifically tailored for Chrysler 6.4L HEMI engines, ensuring perfect fitment and compatibility with factory components
• Supports engine speeds up to 8000 RPM, ideal for aggressive camshaft profiles and high-performance builds
• Manufactured to exacting tolerances to maintain consistent valve timing and engine reliability
• Designed to meet the needs of bracket, drag, and oval track racers seeking durable and efficient valvetrain components

Construction & Design

Each valve in this set is crafted with meticulous attention to detail, using premium materials selected for their strength and heat resistance. The valves feature a race-proven design that balances durability with optimal flow characteristics, helping to maximize engine breathing and power output. The 2.140-inch valve head diameter is engineered to enhance intake charge flow, contributing to improved volumetric efficiency.

Manley’s manufacturing process ensures consistent stem straightness and a superior surface finish, which reduces friction and wear on valve guides and seals. This precision construction supports long-lasting performance even under the most demanding racing conditions.

Installation & Fitment

This valve set is a direct fit for Chrysler 6.4L HEMI engines found in a wide range of vehicles from 2011 to 2024, including the Chrysler 300, Dodge Challenger, Dodge Charger, Dodge Durango, Jeep Grand Cherokee SRT8, Jeep Wrangler, Ram 2500, Ram 3500, and Jeep Grand Wagoneer. Installation is straightforward for experienced engine builders and professional shops, requiring no modifications or special machining beyond standard engine assembly procedures.

The valves are designed to work seamlessly with factory valve guides and seats, ensuring a hassle-free upgrade that supports high-RPM operation and aggressive cam profiles without cutting, drilling, or special tuning.

What's Included

• Set of 8 Manley Race Flo Intake Valves sized at 2.140 inches for Chrysler 6.4L HEMI engines

Ideal For

• Bracket racers seeking reliable valvetrain components for high-RPM operation
• Drag racers building engines for maximum power and durability
• Oval track racers requiring consistent valve performance under demanding conditions
• Engine builders upgrading Chrysler 6.4L HEMI valvetrain components for improved airflow and strength

Manley Performance manufactures high-strength engine internals for serious builds—especially forged pistons, connecting rods, valves, and valvetrain components developed for racing and high-output street applications. If you’re building for boost, high compression, or sustained RPM, Manley is a common choice for parts engineered to take abuse and keep power reliable.