Manley Performance Race Series Intake Valves

2005–2010 Chrysler 300C, Dodge Challenger, Dodge Charger, Dodge Magnum, Jeep Grand Cherokee 6.1L HEMI SRT8

Part #: 11668-8

Overview

The Manley Performance 2.080" Triple Groove Race Flo Intake Valve Set is engineered specifically for Chrysler 6.1L HEMI SRT8 engines from 2005 to 2010. Designed to meet the rigorous demands of bracket racing, drag racing, and oval track competition, these intake valves deliver exceptional durability and enhanced airflow for engines running up to 8000 RPM. Whether you are a serious racer or a performance enthusiast, these valves provide the reliability and efficiency needed to maximize your engine’s power and responsiveness under high-stress conditions.

Built to exacting standards, these intake valves improve combustion efficiency and valve stability, helping your engine maintain peak performance during aggressive driving scenarios. They are a direct replacement for factory valves, ensuring seamless integration with your existing valvetrain without the need for modifications.

Key Features

Manley Performance Race Series intake valves incorporate advanced engineering and manufacturing techniques to optimize performance and longevity. Key features include:

• 2.080-inch valve head diameter optimized for increased intake airflow and combustion efficiency
• Triple groove stem design for superior valve guide retention and reduced stem wear
• High-strength materials engineered to resist heat, fatigue, and wear common in high-performance engines
• Precision machining and finishing for consistent valve seat contact and reliable sealing
• Specifically designed for Chrysler 6.1L HEMI SRT8 engines, ensuring perfect fitment and compatibility
• Suitable for engines operating up to 8000 RPM, ideal for a wide range of racing applications
• Manufactured by Manley Performance, a trusted leader in high-performance valvetrain components

Construction & Design

These intake valves are crafted from premium, heat-resistant materials selected to withstand the extreme conditions of high-RPM racing environments. The triple groove stem design enhances valve guide retention, minimizing valve movement and stem wear during aggressive operation. This design feature ensures long-lasting durability and consistent performance even under intense thermal and mechanical stress.

The 2.080-inch valve head diameter is carefully optimized to increase intake flow capacity without compromising valve seat durability. Each valve undergoes meticulous machining and finishing processes to maintain tight tolerances, ensuring reliable sealing and consistent engine performance over time.

Installation & Fitment

The Manley Performance intake valves are direct replacements for the factory intake valves in Chrysler 6.1L HEMI SRT8 engines from 2005 to 2010. No special machining or modifications are required, making installation straightforward for qualified technicians. Proper valve clearance and seating should be verified during installation to ensure optimal valvetrain operation and engine reliability.

What's Included

• Set of 8 Manley Race Series intake valves
• Triple groove stems for enhanced guide retention
• 2.080-inch valve heads optimized for flow

Ideal For

This valve set is ideal for racers and performance enthusiasts who demand reliable, high-flow valvetrain components for their Chrysler 6.1L HEMI SRT8 engines. Perfectly suited for bracket racing, drag racing, and oval track competition, these valves support engines running at high RPMs while maintaining durability and consistent performance under demanding conditions.

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.