VERTEX offers you this original-type piston designed for Yamaha 250cc engines. With a diameter of 66.4 mm and a bi-segment design, it offers a good balance between performance, torque and reliability.

Superior quality, it perfectly replaces the original piston without modification. Its design allows for a slightly higher compression ratio (37.9), which improves engine torque, especially at low and mid-range speeds.

This model features two lubrication points to optimize lubrication and ensure longer cylinder and piston life. The skirt has also been reworked to promote gas flow and improve overall engine efficiency.

This piston is therefore ideal for optimizing the top end of the engine while maintaining excellent reliability.

Available sizes:

A: 66.34 mm

B: 66.35 mm

C: 66.36 mm

D: 66.37 mm

Allow about 15 days for this type of piston.

Fits on:

YAMAHA WR 250 1999

YAMAHA WR 250 2000

YAMAHA WR 250 2001

YAMAHA WR 250 2002

YAMAHA WR 250 2003

YAMAHA WR 250 2004

YAMAHA WR 250 2005

YAMAHA WR 250 2006

YAMAHA WR 250 2007

YAMAHA WR 250 2008

YAMAHA WR 250 2009

YAMAHA WR 250 2010

YAMAHA WR 250 2011

YAMAHA WR 250 2012

YAMAHA WR 250 2013

YAMAHA WR 250 2014

YAMAHA WR 250 2015

YAMAHA WR 250 2016

YAMAHA WR 250 2017

YAMAHA WR 250 2018

YAMAHA WR 250 2019

YAMAHA WR 250 2020

YAMAHA WR 250 2021

YAMAHA YZ 250 1999

YAMAHA YZ 250 2000

YAMAHA YZ 250 2001

YAMAHA YZ 250 2002

YAMAHA YZ 250 2003

YAMAHA YZ 250 2004

YAMAHA YZ 250 2005

YAMAHA YZ 250 2006

YAMAHA YZ 250 2007

YAMAHA YZ 250 2008

YAMAHA YZ 250 2009

YAMAHA YZ 250 2010

YAMAHA YZ 250 2011

YAMAHA YZ 250 2012

YAMAHA YZ 250 2013

YAMAHA YZ 250 2014

YAMAHA YZ 250 2015

YAMAHA YZ 250 2016

YAMAHA YZ 250 2017

YAMAHA YZ 250 2018

YAMAHA YZ 250 2019

YAMAHA YZ 250 2020

YAMAHA YZ 250 2021