NEW YZ250 293cc Big Bore Kit 72mm Cylinder Piston Head Power Valve Gaskets

  
Magnum MX National Big Bore Kit: YZ250 2T (293cc). Magnum MX National Big Bore Kit Compression Ratio: STD Cylinder Diameter: 72 mm Cylinder Kit Type: Big Bore Displacement: 293 cc Engine Type: 2-Cycle Includes: Cylinder, Cylinder Head, Power Valve Kit, Piston Kit, Top End Gasket Kit & Wrist Pin. Wrist Pin Bearing not included. Designed by the legendary Eric Gorr. Includes a brand new Magnum Racing big bore Nikasil plated cylinder, head, power valves, big bore piston kit and top end gasket kit.

Magnum cylinders are ready-to-install, eliminating the hassle of sending out your cylinder for replating or boring. Magnum cylinders look virtually identical to OEM and are nickel silicon carbide plated for long life.

Piston kit includes piston, high quality rings, circlips and wrist pin. Magnum top end gasket kit includes all the necessary gaskets to install the new top end. Completely bolt on kit, no honing or machining required.