What material are these Manley exhaust valves made from?

These Manley exhaust valves are constructed from high-quality stainless steel. They also feature chrome stems and hard tips for added durability and wear resistance.

Are these valves suitable for high-RPM engines?

Yes, Manley's Race Series valves are designed for engines operating under 8000 RPM. They are built to meet the demands of racing applications.

What is the benefit of the swirl polished and machined faces?

The swirl polished under-head areas and fully machined combustion faces are designed to optimize airflow into the cylinder. This can contribute to improved combustion efficiency in your engine.

Specifications

Brand: Manley Performance
Part #: 11649-4
UPC: 807298046716

Manley VW 1200-1600 Triple Groove 32.0mm Race Master Exhaust Valves (Set of 4)

Name: Manley VW 1200-1600 Triple Groove 32.0mm Race Master Exhaust Valves (Set of 4)
Brand: Manley Performance
SKU: manley-performance-manley-vw-1200-1600-triple-groove-32-0mm-race-master-exhaust--t14-281096
Price: 109.49 USD
Availability: BackOrder

$109.49

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Manley VW 1200-1600 Triple Groove 32.0mm Race Master Exhaust Valves (Set of 4). Well-built stainless steel for demanding engine builds.

Key Features

Fits VW 1200-1600cc engines.
Set includes four (4) exhaust valves.
Features a 32.0mm head diameter and triple groove stem.
Constructed from durable stainless steel for longevity.
Chrome stems and hard tips enhance wear resistance.
Swirl polished under-head areas and fully machined combustion faces optimize airflow.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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About this part

Product Details

Manley's Race Master exhaust valves are a solid option for VW engines, specifically the 1200-1600cc range, when you're building for performance applications like bracket, drag, or oval track racing, especially if your engine will see speeds up to 8000 RPM. These are designed to handle the heat and stress that come with higher performance levels.

They're made from stainless steel, which is a strong choice for exhaust valves, and feature chrome stems and hard tips to help them last longer and resist wear. The under-head area is swirl polished and the combustion face is fully machined. This helps improve airflow into the cylinder and can contribute to better combustion efficiency. Manley offers these in a Race Master straight stem design, which is what you're looking at here.

These valves are also a recommended choice for exhaust valves in alcohol-fueled engines, which tend to run hotter and require robust components. If you're rebuilding the top end of your VW engine and need reliable exhaust valves, these are a popular choice.