Kit ATHENA BIG BORE Ø72mm 300cc for YAMAHA YZ 250 from 2003 to 2021
€1,286.28
Tax Included
A top of the range kit that will allow you to start over and increase the displacement and therefore the performance of your machine.
Here is the big bore kit proposed by ATHENA to increase the capacity of your motocross / enduro YAMAHA YZ 250cc from 2003 to 2021. This kit in Ø72mm against Ø66mm of origin thus makes it possible to pass your motor bike of 250cc has 294cc real! A gain of torque and performance will be immediately felt. It allows a gain of 4 HP on average which is huge on this vehicle. You go from 41hp to 45.3hp thanks to the high engine ATHENA BIG BORE. Enough to have fun on the tracks or in the forest. ATHENA has also planned things well because this top engine is sold complete. It includes the cylinder, piston, ring, cylinder head and 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, so you have no modification to do! Attached is the power curve so that you can see for yourself the difference between the original and the big bore. We have also provided you with the assembly instructions if you wish to have more information on the assembly of this kit for example the adjustment of the squish. You will also find a detailed list of vehicles on which this cylinder can be mounted.
Fits on:
P400485100042
Specific References
Click on your bike to see all compatible parts.
- 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
No customer reviews for the moment.
You might also like
A top of the range kit that will allow you to start over and increase the displacement and therefore the performance of your machine.
Kit ATHENA BIG BORE Ø72mm 300cc for YAMAHA YZ 250 from 2003 to 2021
€1,286.28
Tax Included