Here is the big bore kit proposed by ATHENA to increase the capacity of your motocross / enduro KAWASAKI KXF 450cc in 4 strokes from 2009 to 2015. This kit in Ø100mm against Ø96mm of origin thus makes it possible to pass your motor bike of 450cc has 493cc real! A gain of torque and performance will be immediately felt. It allows a gain of 5 HP and 4 NM on average which is huge on this vehicle. 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 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 that 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:

KAWASAKI KX 450 F (KXF 450 KX450F) 450 2015

KAWASAKI KX 450 F (KXF 450 KX450F) 450 2014

KAWASAKI KX 450 F (KXF 450 KX450F) 450 2013

KAWASAKI KX 450 F (KXF 450 KX450F) 450 2012

KAWASAKI KX 450 F (KXF 450 KX450F) 450 2011

KAWASAKI KX 450 F (KXF 450 KX450F) 450 2010

KAWASAKI KX 450 F (KXF 450 KX450F) 450 2009