Kit 276cc Ø82mm ATHENA racing for Yamaha WR 250 F from 2015 to 2017 and YZ 250 F from 2014 to 2018

Complete kit ATHENA of very high quality! Aluminum cylinder with high quality Nicasil treatment, made in Italy.

VERTEX piston, high compression with pre-ground steel segmentation! Joint ATHENA, (one of the best seal manufacturer in the world), we are clearly on the very top of the range.

The increase in compression as well as the reduction of friction, the temperature in the room will offer more performance to your machine!

With its large diameter of 82mm, this kit BIG BORE offers a displacement of 276cc real! The gain of torque and power are really present!

Fits in combinations of the cylinder head and crankshaft of origin on the Yamaha WR 250 F from 2015 to 2017 and YZ 250 F from 2014 to 2018 4T.