Kit 480cc Ø98mm ATHENA racing for Yamaha YZ 450 F from 2006 to 2009 and Yamaha WR 450 F 2007 to 2015

Complete kit ATHENA high quality high performance! Aluminum cylinder avaic Nicasil treatment of high quality, 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.

The increase in displacement of 480cc ø98 Big Bore, the compression and the reduction of friction, the temperature in the room will offer more performance to your machine!

It's all that make it a very robust and powerful kit. Mounts on your motorcycle cross 4T with the original breech without modification of the latter.

Mounts on :

Off-road Yamaha YZ 450 F - 2006/2009
Off-road Yamaha WR 450 F - 2007/2015