What is the purpose of a valve spring base kit?

A valve spring base kit, like this one from Skunk2, allows you to install higher-performance dual valve springs into cylinder heads that were originally designed for single valve springs. It acts as a locator to properly seat the dual spring setup.

What vehicles does this valve spring base kit fit?

This kit is designed for Honda K-series engines and Acura F-series engines. It fits a variety of models including the Acura RSX, TSX, Honda Civic, Accord, CR-V, and Element from various model years within the 2002-2011 range.

What material are these spring bases made from?

The spring bases are manufactured from high-quality steel that has undergone ultrasonic inspection to ensure its integrity and quality.

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Specifications

Brand: Skunk2 Racing
Part #: 312-05-0010
UPC: 873265005932

Skunk2 Honda/Acura (K20/K24/F20C/F22C) Valve Spring Base Kit

Name: Skunk2 Honda/Acura (K20/K24/F20C/F22C) Valve Spring Base Kit
Brand: Skunk2 Racing
SKU: skunk2-racing-skunk2-honda-acura-k20-k24-f20c-f22c-valve-spring-base-kit-t14-273451
Price: 52.29 USD
Availability: BackOrder

$52.29

On Backorder — Expected to ship by Jul 9, 2026

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

Skunk2 Honda/Acura (K20/K24/F20C/F22C) Valve Spring Base Kit. Allows K-series heads to accept dual valve springs.

Key Features

Fits 2002-2011 Honda Civic, 2002-2006 Acura RSX, 2004-2008 Acura TSX, 2003-2007 Honda Accord, 2002-2009 Honda CR-V, and 2003-2011 Honda Element.
Allows K-series cylinder heads originally equipped with single valve springs to accept dual valve springs.
Manufactured from high-quality steel that has been ultrasonically inspected.
Features a 0.440 inch inner diameter.
Includes 16 spring bases.

⚠️ 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

Skunk2 Racing is known for its performance engine and suspension components for Honda and Acura vehicles. This valve spring base kit is designed specifically for Honda's K-series engines, as well as the F20C and F22C found in some S2000 models. Its main job is to let you install higher-performance dual valve springs, like those also offered by Skunk2, into cylinder heads that originally came with single valve springs.

These spring bases are developed using advanced 3D CAD and FEA to ensure they are optimized for strength and will last. Skunk2 tests these designs on the engine dyno before manufacturing. They use high-quality steel that's been inspected to ensure it's free from defects, and then CNC machined to precise dimensions. This attention to detail means you get a well-built part that's ready to handle the demands of performance valvetrain upgrades.

This kit includes 16 spring bases, each with an inner diameter of 0.440 inches. They fit a range of popular vehicles, including the Acura RSX, Honda Civic, and Honda CR-V, among others. If you're looking to upgrade your valvetrain for better performance, these bases are a key component to make that happen.