Part 11005-K01 Cylinder Works Big Bore Cylinder Kit Retail Price:Your Price$728.95 Pack Size:eaQty / Unit:1 Quantity -+ Add to Cart Quantity discounts available QuantityPrice DescriptionCylinder Works Big Bore Cylinder KitFits ModelsTRX 450 ER (06-14); TRX 450 R (06-09)SpecsUse with Hot Rods Crankshaft #4193 for 500ccUses Vertex #23523Compression Ratio12.0:1Cylinder Diameter99 mmCylinder Kit TypeBig BoreDisplacement477 ccEngine Type4-CycleIncludesCylinder, Piston Kit, and Top-End Gasket KitSize Over Standard3.0mm