What is the main benefit of these Manley exhaust valves?

These valves are designed with swirl-polished under-head areas and machined combustion faces to optimize airflow. This helps improve combustion efficiency and overall engine performance, especially in racing applications.

Are these valves suitable for all engine builds?

These are Manley's Race Master valves, featuring a straight stem design. They are specifically recommended for engines operating under 8000 RPM and are also a recommended choice for exhaust valves in alcohol engines.

What material are these valves made from?

The exhaust valves are constructed from high-quality stainless steel for durability. They also feature chrome stems and hard tips to enhance longevity and wear resistance.

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Specifications

Brand: Manley Performance
Part #: 11171-8
UPC: 807298040295

Manley Subaru WRX EJ205/STi EJ257 33mm Race Master Exhaust Valves (Set of 8)

Name: Manley Subaru WRX EJ205/STi EJ257 33mm Race Master Exhaust Valves (Set of 8)
Brand: Manley Performance
SKU: manley-performance-manley-subaru-wrx-ej205-sti-ej257-33mm-race-master-exhaust-va-t14-269368
Price: 211.14 USD
Availability: InStock

$211.14

Only 3 left in stock

Fits 2002-2011 Subaru Impreza. Manley Race Master exhaust valves improve airflow for better engine performance.

Key Features

Fits 2002-2011 Subaru Impreza.
Set of 8 Manley Race Master exhaust valves.
33mm diameter.
Constructed from stainless steel for durability.
Features chrome stems and hard tips for wear resistance.
Swirl-polished under-head areas and machined combustion faces optimize airflow.

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About this part

Product Details

If you're rebuilding the top end of your 2002-2011 Subaru Impreza, especially for racing applications, new exhaust valves are a critical component. These Manley Race Master exhaust valves are designed to handle the heat and stress of high-performance engines, helping to ensure your engine breathes efficiently.

Constructed from durable stainless steel, these valves are built to last. They feature chrome stems and hard tips for improved wear resistance, which is important for longevity in demanding conditions. The swirl-polished under-head areas and fully machined combustion faces are designed to optimize airflow into the cylinder, contributing to better combustion efficiency. These are the straight stem 'Race Master' style, chosen for specific engine builds.

This set includes eight exhaust valves, enough for a complete engine. They are also recommended for use in alcohol-fueled engines, offering reliable performance where it's needed most.