Part 21002-K01 Cylinder Works Big Bore Cylinder Kit Retail Price:Your Price$774.95 Pack Size:eaQty / Unit:1 Quantity -+ Add to Cart Quantity discounts available QuantityPrice DescriptionCylinder Works Big Bore Cylinder KitFits ModelsWR 250 F (01-13); YZ 250 F (01-13)SpecsUses Vertex #23129Compression Ratio12.5:1Cylinder Diameter80 mmCylinder Kit TypeBig BoreDisplacement270 ccEngine Type4-CycleIncludesCylinder, Piston Kit, and Top-End Gasket KitSize Over Standard3.00mm