Manley Performance Race Master Exhaust Valves

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

Part #: 12331-8

Overview

Manley Performance Race Master Exhaust Valves are precision-engineered for the demanding 6.4L HEMI engines found in Chrysler, Dodge, Jeep, and Ram vehicles from 2011 through 2024. Designed specifically for high-performance and racing applications, these valves excel in extreme conditions such as bracket racing, drag racing, and oval track competition. Built to withstand engine speeds up to 8000 RPM, they offer enhanced durability and reliability for serious racers and performance enthusiasts seeking to upgrade or rebuild their exhaust valve train components.

Whether you are assembling a race motor or improving factory components for increased longevity and consistent performance, Manley’s Race Master valves provide race-proven quality and precision fitment tailored to the 6.4L HEMI platform.

Key Features

Manley Race Master Exhaust Valves combine advanced materials and design innovations to meet the rigorous demands of high-revving engines. Key features include:

• Constructed from premium, high-temperature resistant materials engineered for extreme racing environments
• Triple groove design with a 1.654-inch diameter for secure valve spring retention and optimal sealing
• Specifically designed for the 6.4L HEMI engine platform ensuring precise fitment and compatibility
• Enhanced strength and durability to resist valve face wear, bending, and fatigue under high RPM conditions
• Manufactured to exacting tolerances for consistent valve seating and improved engine efficiency
• Ideal for bracket racing, drag racing, and oval track applications where reliability is critical
• Set of 8 valves included, covering all exhaust ports for complete engine valve replacement

Construction & Design

These exhaust valves are crafted from high-grade materials selected to endure the intense heat and mechanical stresses typical of racing environments. The triple groove configuration ensures a secure fit with valve springs, minimizing the risk of valve failure during high-RPM operation. Precision machining maintains tight dimensional tolerances, promoting optimal sealing and combustion chamber efficiency. This meticulous construction supports improved engine reliability and longevity, even under the demanding conditions of competitive motorsports.

Installation & Fitment

Manley Race Master Exhaust Valves are designed as direct replacements for factory valves in 2011 and newer Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 6.4L 392 HEMI engine. Installation follows standard engine rebuild procedures and is best performed by experienced technicians or engine builders familiar with high-performance valve train components. No modifications to the cylinder head or valve train are necessary when installed correctly. These valves are engineered to perform reliably at engine speeds up to 8000 RPM.

What's Included

• Set of 8 Manley Race Master Exhaust Valves with triple groove design (1.654-inch diameter)

Ideal For

This valve set is perfect for racers and performance enthusiasts who demand durability and reliability in high-RPM applications. It is especially suited for:

• Bracket racing engines
• Drag racing builds
• Oval track race cars
• High-performance street engines operating under 8000 RPM
• Engine builders seeking premium aftermarket valve components for 6.4L HEMI platforms