Here is the big bore kit proposed by ATHENA to increase the displacement of your motocross / enduro HONDA CRE, CRF in 250cc 4 stroke from 2004 to 2009. This kit in Ø82mm against Ø78mm of origin thus makes it possible to pass your motor bike of 250cc has 280cc! A gain of torque and performance will be immediately felt. It allows a gain of 6 HP on average which is huge on this vehicle. Of what amply to have fun on the tracks or in the forest. ATHENA has moreover well foreseen the things because this high engine is sold complete. It includes the cylinder, piston, ring as well as all the gaskets you need for a quality and tight reassembly. The advantage of taking this engine is that it is designed to be mounted on the original connecting rod with the original cylinder head and camshaft. So you have no modification to do or adjustment! Here attached the power curve so you can see by yourself the difference between the original and the big bore. You will also find a detailed list of vehicles on which this cylinder can be mounted.

Fits on:

HONDA CRE F R 250 cc 2004

HONDA CRE F R 250 cc 2005/2007

HONDA CRE F R 250 cc 2008/2009

HONDA CRE F X 250 cc 2004

HONDA CRE F X 250 cc 2005/2006

HONDA CRE F X 250 cc 2007/2008

HONDA CRE F X 250 cc 2009

HONDA CRE F X 250 cc 2010

HONDA CRF R 250 cc 2004

HONDA CRF R 250 cc 2005

HONDA CRF R 250 cc 2006

HONDA CRF R 250 cc 2007

HONDA CRF R 250 cc 2008

HONDA CRF R 250 cc 2009

HONDA CRF X 250 cc 2004/2005

HONDA CRF X 250 cc 2006

HONDA CRF X 250 cc 2007/2009

HONDA CRF X 250 cc 2010

HONDA CRF X 250 cc 2011/2012

HONDA CRF X 250 cc 2013

HONDA CRF X 250 cc 2014

HONDA CRF X 250 cc 2015