Athena 98mm Big Bore Cylinder Kit For YFZ450 (478cc) With Top End Gaskets

Want to give your YFZ450 some serious extra power?

This Athena big bore kit is the answer.

It bumps your displacement up to 478cc with a 98mm cylinder.

The kit includes the cylinder barrel and a complete top end gasket set, so you've got everything you need for the rebuild.

It's made in Italy by Athena, known for their quality and durability.

It's corrosion-resistant, sealed, and built to perform.

Whether you're racing or trail riding, this kit will wake your quad up in a big way.