Here is the big bore kit proposed by ATHENA to increase the displacement of your motocross / enduro KTM EXC-F, XCW-F, Freeride and HUSQVARNA FE in 350cc 4 stroke from 2012 to 2016. This kit in Ø90mm against Ø88mm of origin thus makes it possible to pass your motor bike of 350cc has 365cc! A gain of torque and performance will be immediately felt. It allows a gain of 3 HP and 2 NM on average which is huge on this vehicle. Enough to have fun on the tracks or in the forest. ATHENA has moreover well planned things 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 don't have to make any modification or adjustment ! You will find below a detailed list of vehicles on which this cylinder can be mounted.