Your engine has tightened and you wish to start again on a quality engine so that you don't have to dismantle it so soon ? Then here is the complete engine top proposed by ATHENA to reassemble your YAMAHA YZ 125cc 2 stroke engine from 1997 to 2004. This kit is sold complete as on the picture with its axle, clips, ring, piston, gasket, cylinder head, screws and its cylinder. This kit is not a big bore, it has the same characteristics as the original one so it is Ø54mm which gives us 125cc. But it still allows a gain of 2 HP compared to the original. This kit will allow you to refurbish your machine and especially to have a quality cylinder as reliable as the original. Attached is the power curve so that you can see for yourself the difference between the original and the kit ATHENA. It is of course of excellent quality as usual at ATHENA. The nikasil is really of excellent manufacture to guarantee you an increased reliability. We also have all the gaskets, rings and all the spare piston dimensions so that you can keep your cylinder as long as possible. Below you will find a list of vehicles compatible with this kit.

Fits on:

YAMAHA YZ 125 1997

YAMAHA YZ 125 1998

YAMAHA YZ 125 1999

YAMAHA YZ 125 2000

YAMAHA YZ 125 2001

YAMAHA YZ 125 2002

YAMAHA YZ 125 2003

YAMAHA YZ 125 2004