ATHENA offers you this replacement twin ring piston for the top engine ATHENA Big Bore P400485100042 mounted on YAMAHA YZ 250cc. This piston will allow you to restore your cylinder to the original performance. Ideal in case of wear it is available in dimension A in 71.95mm and B in 71.96mm thus allowing to palliate the loss of compression of the friction of the piston in the cylinder. This piston is delivered with its rings, pin and clips in C. We strongly advise you to mount the piston with new seals to avoid any compression loss. We recommend changing the piston every 10,000 km or 35 hours maximum!

Fits on:

YAMAHA YZ 250 (CG13) 250 2003

YAMAHA YZ 250 (CG17) 250 2004

YAMAHA YZ 250 (CG20) 250 2005

YAMAHA YZ 250 (CG23) 250 2021

YAMAHA YZ 250 (CG23) 250 2020

YAMAHA YZ 250 (CG23) 250 2019

YAMAHA YZ 250 (CG23) 250 2018

YAMAHA YZ 250 (CG23) 250 2017

YAMAHA YZ 250 (CG23) 250 2016

YAMAHA YZ 250 (CG23) 250 2015

YAMAHA YZ 250 (CG23) 250 2014

YAMAHA YZ 250 (CG23) 250 2013

YAMAHA YZ 250 (CG23) 250 2012

YAMAHA YZ 250 (CG23) 250 2011

YAMAHA YZ 250 (CG23) 250 2010

2009 YAMAHA YZ 250 (CG23) 250

YAMAHA YZ 250 (CG23) 250 2008

2007 YAMAHA YZ 250 (CG23) 250

YAMAHA YZ 250 (CG23) 250 2006