4G63 Tomei Adjustable Cam Gear

These cam gears are used to make fine adjustment to valve timing. Installation requires engine tuning to ensure safe operation. Recommended (and often required) when installing aftermarket camshaft upgrades.

Evolution 4-8 models require two cam gears.

Evolution 9 models require only one cam gear due to running the MIVEC system.

We recommend pairing these gears with a set of Kelford Cams 272° camshafts for best results in most applications.


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