What is included with these Manley valves?

This product includes a set of Manley 36mm Race Flo intake valves. It does not include exhaust valves or any other engine components.

What makes these valves 'Race Flo'?

The 'Race Flo' designation refers to the specific shape of the valve head and stem, which Manley has designed to optimize airflow into the combustion chamber for improved engine performance.

Are these valves suitable for high-performance applications?

Yes, Manley's Race Series valves are built for demanding use, including bracket, drag, and oval track racing, and are recommended for engines operating up to 8000 RPM.

Specifications

Brand: Manley Performance
Part #: 11138-8
UPC: 807298051024

Manley 00-03 Subaru WRX (EJ20) / 04 STi Intake 36mm Stainless Race Flo Valves

Name: Manley 00-03 Subaru WRX (EJ20) / 04 STi Intake 36mm Stainless Race Flo Valves
Brand: Manley Performance
SKU: manley-performance-manley-00-03-subaru-wrx-ej20-04-sti-intake-36mm-stainless-rac-t14-5544
Price: 229.72 USD
Availability: InStock

$229.72

Only 1 left in stock

Fits 2002-2012 Subaru Impreza. Manley 36mm Stainless Race Flo Intake Valves. Optimized for airflow and durability.

Key Features

Fits 2002-2012 Subaru Impreza and 2005-2006 Saab 9-2X.
Includes Manley 36mm Race Flo intake valves.
Constructed from stainless steel for improved durability.
Features chrome stems and hard tips for enhanced wear resistance.
Swirl-polished under head areas and fully machined combustion faces help optimize airflow.
Designed for engines operating under 8000 RPM.

⚠️ 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

When you're rebuilding the top end of your 2002-2012 Subaru Impreza, especially with the EJ20 engine, you want parts that can handle the heat and stress. This set includes Manley's 36mm Race Flo intake valves, designed to help your engine breathe easier.

These aren't your average valves. They're made from stainless steel, which is a solid choice for durability under high temperatures. The stems are chrome-plated for extra wear resistance, and the combustion faces are fully machined and swirl-polished. This machining helps smooth out the airflow as it enters the cylinder, which can make a difference in how efficiently your engine runs. Manley recommends these for engines running up to 8000 RPM, so they're built for more than just daily driving.

This specific part number is for the intake valves only, with a 36mm diameter and the Race Flo shape, which is designed to optimize airflow. If you're looking to get the most out of your engine build, these valves are a well-built option.