What material is this exhaust valve made from?

This Manley exhaust valve is constructed from high-quality stainless steel. It also features chrome stems and hard tips for added durability and wear resistance.

What is the benefit of the swirl polished under head area?

The swirl polished under the head area, along with the fully machined combustion face, is designed to optimize airflow into the cylinder. This helps improve combustion efficiency for better engine performance.

Are these valves suitable for all engine types?

Manley specifically recommends these valves for exhaust applications in alcohol engines due to their reliable performance under demanding conditions. They are part of Manley's Race Series, designed for engines operating under 8000 RPM.

Specifications

Brand: Manley Performance
Part #: 11643-1
UPC: 807298017921

Manley 99-10 Dodge Viper 1.600in Diameter 5.770in Length Race Master Exhaust Valve (Single)

Name: Manley 99-10 Dodge Viper 1.600in Diameter 5.770in Length Race Master Exhaust Valve (Single)
Brand: Manley Performance
SKU: manley-performance-manley-99-10-dodge-viper-1-600in-diameter-5-770in-length-race-t14-105759
Price: 28.80 USD
Availability: BackOrder

$28.80

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Manley Race Master exhaust valve for 1999-2010 Dodge Viper. Stainless steel construction for durability.

Key Features

Fits 1999-2010 Dodge Viper.
Features a 1.600 inch diameter and 5.770 inch length.
Constructed from high-quality stainless steel for durability.
Chrome stems and hard tips enhance longevity and wear resistance.
Swirl polished under head areas and fully machined combustion faces optimize airflow.
Recommended for exhaust valves in alcohol engines.

⚠️ 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

Starting with a 1.600 inch diameter and a 5.770 inch length, this Manley Race Master exhaust valve is built for serious performance. It's constructed from high-quality stainless steel, which is a solid choice for durability, especially when you're pushing your engine hard. The stems are chromed and feature hard tips, adding to their wear resistance and making them last longer through countless cycles.

You'll also notice the swirl polished under the head area and a fully machined combustion face. These details help optimize airflow into the cylinder and improve combustion efficiency, which is key for getting the most out of your engine. Manley recommends these valves for alcohol engines, so if you're running that type of fuel, you can count on reliable performance.