Part 21009-K01 Cylinder Works Big Bore Cylinder Kit Retail Price:Your Price$1,106.95 Pack Size:eaQty / Unit:1 Quantity -+ Add to Cart Quantity discounts available QuantityPrice DescriptionCylinder Works Big Bore Cylinder KitFits ModelsYZ 250 (99-24)SpecsUses Vertex #24079BCompression RatioSTDCylinder Diameter72 mmCylinder Kit TypeBig BoreDisplacement295 ccEngine Type2-CycleIncludesCylinder, Cylinder Head, Power Valve Kit, Piston Kit, Top End Gasket Kit & Wrist Pin BearingSize Over Standard5.60mm