Kit 478cc ATHENA Ø98mm, aluminum cylinder / piston for QUAD Yamaha YFZ 450 S from 2004 to 2011

Complete kit ATHENA high quality high performance! Aluminum cylinder with high quality Nicasil treatment, made in Italy.

VERTEX piston, high compression graphite with pre-ground steel segmentation! Joint ATHENA (one of the best seal manufacturer in the world), we are clearly on the very top of the range.

This kit increases the original performance and allows to start afresh for many hours of use! very good quality, this product is made with Italian know-how.

It's all that make it a very robust and powerful kit. Mounts with the original cylinder head without modification of the latter.

Mounts on Atv-quad Yamaha YFZ 450 S - 2004/2011