What is the maximum engine speed this kit is designed to handle?

This Manley Performance valve spring and retainer kit is engineered to handle engine speeds of up to 10,000 RPM. This allows for consistent valve control in high-performance and racing applications.

What materials are the retainers and valve locks made from?

The retainers are made from aerospace-grade titanium and are CNC machined for precision. The included valve locks are manufactured from heat-treated steel, ensuring durability.

Does this kit include everything needed for installation?

This kit includes matched valve springs, retainers, and valve locks. While it is a comprehensive valvetrain upgrade kit, always refer to the manufacturer's installation instructions for any additional hardware or specialized tools that may be required.

Manley Honda K20A/K20Z Valve Spring and Retainer Kit (w/ Valve Locks)

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Specifications

Brand: Manley Performance
Part #: 26140K
UPC: 807298045009

Manley Honda K20A/K20Z Valve Spring and Retainer Kit (w/ Valve Locks)

Name: Manley Honda K20A/K20Z Valve Spring and Retainer Kit (w/ Valve Locks)
Brand: Manley Performance
SKU: manley-performance-manley-honda-k20a-k20z-valve-spring-and-retainer-kit-w-valve--t14-257491
Price: 683.60 USD
Availability: BackOrder

$683.60

On Backorder

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

Fits 2006-2011 Honda Civic. Manley K20A/K20Z Valve Spring and Retainer Kit with Locks. Handles up to 10,000 RPM for high-performance builds.

Key Features

Verified fitment for 2006-2011 Honda Civic and 2002-2006 Acura RSX.
Includes matched valve springs, titanium retainers, and steel valve locks.
Chrome-silicon alloy springs offer exceptional fatigue resistance and high tensile strength.
Titanium retainers are aerospace grade and CNC machined to exacting tolerances.
Designed to handle aggressive aftermarket camshafts and engine speeds up to 10,000 RPM.
Valve locks are manufactured from heat-treated steel.

⚠️ 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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Fits these vehicles

Acura RSX 2002-2006
Honda Civic 2006-2011

Product Details

If you're building a high-performance Honda K20A or K20Z engine for your 2006-2011 Civic, this Manley Performance Valve Spring and Retainer Kit is a solid choice. This kit is designed to take the guesswork out of upgrading your valvetrain, ensuring it can keep up with aggressive aftermarket camshafts and extreme engine speeds. It's built to handle up to 10,000 RPM, giving you the confidence to push your engine hard.

Manley uses a chrome-silicon alloy for the springs, which offers excellent fatigue resistance and high tensile strength. This means they'll maintain consistent valve control even at very high engine speeds. The kit also includes aerospace-grade titanium retainers that are CNC machined for precision, and heat-treated steel valve locks. These components are all designed to work together to provide stability and durability in demanding applications. This kit is a complete package, saving you time and effort in sourcing individual parts.

This kit is specifically designed for the K20A and K20Z engines found in certain Acura RSX and Honda Civic models. Make sure to check the fitment details to confirm it's the right match for your specific vehicle. The included valve locks are manufactured from heat-treated steel, and the kit is designed to handle a maximum lift of .540 inches.