Namura NX-40025K YAMAHA YZ250 1999-2001 Top End Repair Kit 66.35mm "A" Piston
YAMAHA YZ250 1999-00 66.35mm "A" Piston Size (For Standard Bore Cylinder)
YAMAHA YZ250 2001 66.35mm "A" Piston Size (For Standard Bore Cylinder)
YAMAHA YZ250 2001 66.35mm "A" Piston Size (For Standard Bore Cylinder)