Manley Performance 12331-8 Race Series Exhaust Valves for 6.4L HEMI Engines

Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM Manley Valve - Exhaust, Valve-HEMI 6.4 R/M 1.654.

• Recommended for Alcohol Engines: These valves are the recommended choice for exhaust valves in alcohol engines, ensuring reliable performance even in demanding conditions.
• Swirl Polished and Fully Machined: The valves feature swirl polished under head areas and fully machined combustion faces to optimize airflow and combustion efficiency.
• Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.
• Variety of Shapes: Choose between Race Master (Straight Stem) and Race Flo shapes to suit your racing engine's specific requirements.
• Chrome Stems and Hard Tips: Chrome stems and hard tips are incorporated for enhanced longevity and wear resistance.

Designed specifically for high-performance applications, the Manley Performance 12331-8 Race Series Exhaust Valves are engineered to meet the demanding needs of bracket, drag, and oval track racing. Built for engines operating under 8,000 RPM, these valves deliver reliable durability and consistent performance in intense conditions. The valves are recommended for alcohol engines, ensuring they maintain optimal airflow and combustion efficiency even during prolonged high-stress operation. Crafted from high-quality stainless steel, the exhaust (XH-426) and intake (NK-842) valves boast exceptional strength and resistance to wear, making them an ideal choice for racing enthusiasts seeking longevity and precision.

Each valve features swirl-polished under-head areas and fully machined combustion faces, which help improve airflow and combustion efficiency for better power output. The design includes chrome-plated stems and hard tips to enhance wear resistance, extending the lifespan of the valves under rigorous racing conditions. Available in a variety of shapes, including the Race Master (straight stem) and Race Flo configurations, these valves can be tailored to your specific engine setup. Whether you are upgrading an existing engine or building a new high-performance powerplant, these valves provide the perfect balance of durability and performance to maximize your engine's potential.

The Manley Performance Race Series valves are a proven choice for racing applications, combining meticulous engineering with premium materials to meet the strict demands of competitive motorsports. Their compatibility with 6.4L HEMI engines makes them an excellent upgrade for enthusiasts looking to boost engine efficiency and durability. Easy to install and backed by Manley's reputation for quality, these valves are an essential component for racers aiming for consistent, high-level performance on the track.

Features:

• Recommended for alcohol engines to ensure reliable performance in demanding conditions

• Swirl polished under-head areas to optimize airflow and combustion efficiency

• Fully machined combustion faces for precise fit and performance

• Constructed from high-quality stainless steel for durability and wear resistance

• Available in Race Master (straight stem) and Race Flo shapes to suit different engine configurations

• Chrome stems and hard tips for extended longevity and resistance to wear

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1