ATHENA racing 125cc kit for Yamaha YZ 125 motorcycle from 1997 to 2004

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.

Original quality product if not more, the compression as well as the reduction of friction, temperature in the room will offer more performance to your machine!

It's all that makes a kit very robust and powerful. Supplied complete as in the photo with cylinder, piston, gasket, cylinder head, but also relief valves.

Attention, for the instalation of this kit, on the models of 1997-1998, you must change the original exhaust with a model of 1999-2003 and for the models 1997-1999 it is necessary to buy 2 torsion springs (valve ) Yamaha origin year of 2000-2003.

Mounts on Yamaha YZ 125 - 1997/2004