What material are these Manley exhaust valves made from?

These Manley Race Series exhaust valves are constructed from XH-426 stainless steel, chosen for its durability in high-performance applications.

Are these valves suitable for street use or only racing?

While built for the demands of racing up to 8000 RPM, their durable construction and improved airflow can benefit performance-oriented street builds. They are specifically recommended for alcohol engines.

What is the purpose of the bead lock groove?

The bead lock groove on these valves helps to ensure they remain securely seated under the high pressures and stresses encountered in racing engines, preventing potential issues.

Specifications

Brand: Manley Performance
Part #: 11627B-8
UPC: 807298073576

Manley Ford Coyote 5.0L DOHC Exhaust 32mm Race Master Valves w/Bead Loc Groove (Set of 8)

Name: Manley Ford Coyote 5.0L DOHC Exhaust 32mm Race Master Valves w/Bead Loc Groove (Set of 8)
Brand: Manley Performance
SKU: manley-performance-manley-ford-coyote-5-0l-dohc-exhaust-32mm-race-master-valves--t14-199143
Price: 235.06 USD
Availability: BackOrder

$235.06

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Manley Ford Coyote 5.0L DOHC Exhaust 32mm Race Master Valves w/Bead Loc Groove (Set of 8). Improves airflow for racing applications.

Key Features

Fits Ford Coyote 5.0L DOHC engines.
Set of 8 exhaust valves, 32mm head diameter with bead lock groove.
Constructed from durable XH-426 stainless steel.
Chrome-plated stems and hard tips enhance longevity and wear resistance.
Swirl-polished under-head areas and fully machined combustion faces optimize airflow and efficiency.
Recommended for alcohol engines and racing applications up to 8000 RPM.

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About this part

Product Details

If you're rebuilding the top end of your Ford Coyote 5.0L DOHC engine, especially for racing, these Manley Race Series exhaust valves are a solid option. They're built to handle the stress of engines running up to 8000 RPM, making them a popular choice for bracket, drag, and oval track racers.

These exhaust valves are made from XH-426 stainless steel, which is known for its durability. They feature chrome-plated stems and hard tips to resist wear over time, and the under-head areas are swirl-polished to help improve airflow into the cylinder. The combustion faces are also fully machined for better efficiency. This set includes 8 valves, each with a 32mm head diameter and a bead lock groove, which helps ensure the valve stays seated properly under high stress.

Manley recommends these valves for use in alcohol-fueled engines, where they offer reliable performance. If you're looking to optimize your Coyote engine for racing, these well-built valves are a good step.