Tomei Valve Guide Set - Nissan CA18DE(T) 51450-SDA-A01 In addition to incorporating a

In addition to incorporating a tough and wild design that does not lose its strength to the large body mass of vehicles with large PCD wheels

These are an ideal upgrade for any Honda and as they're an OE part

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standard part is also 25mm outer diameter but manufactured from 2mm thick steel)

This is the exact same setup used on our mid 7 second 215+mph Outlaw Civic HB making 2000+hp on methanol

Tomei Valve Guide Set - Nissan CA18DE(T) 51450-SDA-A01 In addition to incorporating aWe chose to use Phosphor Bronze (Cn Sn P alloy) to make our Valve Guides, for its highly tensile and superior heat transferring ability, which is vital, Intake, high power and high RPM outputting engines. Since race engines these days require more power at higher RPM use , these engines now experience more extreme heat conditions. These conditions will increase the deterioration rate on these valve train related components. The Phosphor Bronze