Seller notes

You are bidding on a Brand new 290CC ATHENA BIG BORE CYLINDER KIT for A YAMAHA WR250X, years 08-13 !! Will give greater cooling capacity and increased horsepower and torque. This kit is a TRUE BOLT ON, comes complete with A new Cylinder! Simply bolt it up! Keep all your orginal parts! Comes with the following: Complete new aluminum cylinder with a nickel carbide coating designed with wider water jackets Complete Piston kit forged piston with a moly coating Top End Gasket kit 12.7:1 Compression 8...

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