Cylinder Athena 144cc Yamaha YZ 125 97-04

Cylinder oversized Athena for Yamaha YZ 125 1997-2004, increases the displacement to 144cc.
Manufactured with high-quality materials, this kit will offer you exceptional power improvement with excellent durability. No need to machine the crankcase, just remove one and install the other.

A great option to give your bike more power

The kit includes everything necessary for installation: cylinder, head, piston, gaskets, exhaust valve...

Attention! To install this cylinder on YZ 125 LC 1997-1998 models, you must replace the original silencer with a version from the years 1999-2003, and for the 1997-1999 models you must order the original Yamaha valve springs from the year 2000-2003.