Dirtbike Engine Accessories Bore 95mm Cylinder Block For YZ450F YFZ450 YFZ450R WR450F 2S2-11311-00-00 2S2-11311-10-00 Cylinder block constructed from cast iron with a ceramic.Displacement capacity of 450 ml.Designed for compatibility with YZ450F, YFZ450, YFZ450R, and WR450F models.Features a bore diameter of 9.5 cm.Includes a performance ceramic coating on the inner cylinder wall to support efficient combustion.Serves as a direct replacement component.Meets ISO9001 certification standards. Important: This is an independent aftermarket part.Brand/model references serve only to show compatibility.