Athena Modular Inner Cylinder Head Dome 54.00mm For Athena Racing Cylinder Heads

This is a serious piece of kit for anyone running Athena modular racing cylinder heads.

It's the S410485308002 inner dome, which is the interchangeable part that lets you tune your compression ratio and combustion chamber shape.

This particular one has a diameter of 54.00mm.

It's brand new, genuine Athena, so you know it's precision-made.

A quick heads-up—California law requires us to mention that this product can expose you to chemicals known to the state to cause cancer, birth defects, or other reproductive harm.

So just be aware and handle with care.

If you're building a high-performance engine, this is the exact dome you need.