What material are these Manley exhaust valves made from?

These Manley Race Series exhaust valves are made from XH-426 stainless steel. This material is chosen for its strength and ability to withstand high temperatures and demanding engine conditions.

Are these valves suitable for all types of engines?

These valves are specifically designed for performance applications, particularly bracket, drag, and oval track racing engines operating under 8000 RPM. They are also recommended for exhaust valves in alcohol-fueled engines.

What does 'Race Flo' shape mean for my engine?

The Race Flo shape is a specific design choice that helps optimize airflow through the cylinder head. This can contribute to improved combustion efficiency and overall engine performance.

Specifications

Brand: Manley Performance
Part #: 11695-8
UPC: 807298003924

Manley 09+ Chrysler Hemi 5.7L w/ Triple Groove 1.555in Race Flo Exhaust Valves (Set of 8)

Name: Manley 09+ Chrysler Hemi 5.7L w/ Triple Groove 1.555in Race Flo Exhaust Valves (Set of 8)
Brand: Manley Performance
SKU: manley-performance-manley-09-chrysler-hemi-5-7l-w-triple-groove-1-555in-race-flo-t14-84235
Price: 230.31 USD
Availability: BackOrder

$230.31

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Manley 09+ Chrysler Hemi 5.7L w/ Triple Groove 1.555in Race Flo Exhaust Valves (Set of 8). These well-built stainless steel valves are designed for high-RPM performance.

Key Features

Set of 8 Manley Race Flo exhaust valves with a 1.555-inch diameter.
Constructed from XH-426 stainless steel for durability and heat resistance.
Chrome stems and hard tips enhance wear resistance and longevity.
Swirl polished under-head areas and fully machined combustion faces improve airflow and efficiency.
Designed for engines operating under 8000 RPM.
Recommended for exhaust valves in alcohol-fueled 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

These Manley Race Series exhaust valves feature a 1.555-inch Race Flo shape, specifically chosen to help optimize airflow in your 2009 and newer Chrysler Hemi 5.7L engine. They are constructed from XH-426 stainless steel, a strong material that stands up well to the heat and stress of performance applications, especially those running on alcohol fuels.

You'll notice the chrome stems and hard tips, which are there to improve wear resistance and extend the life of the valve. The under-head areas are swirl polished, and the combustion faces are fully machined. This attention to detail helps improve how air moves through the cylinder head and contributes to better combustion efficiency. These are built for engines running up to 8000 RPM, making them a solid option for bracket, drag, or oval track racing.

This set includes eight exhaust valves, enough to replace all of them in your Hemi. If you're rebuilding the top end of your engine and looking for reliable components that can handle demanding conditions, these Manley valves are a good choice.