Bore Size: 52,95 mm Compression Ratio: 13,8:1 Engine Type: 2-Stroke Piston Diameter: 52,95 mm Piston Material: Silicium Piston Size: Standard Size A Product Name: Piston Kit Riding Style: Offroad Type: A Units: Kit Compression Ratio: STD Number Of Segments: 1 Net Weight G: 132 Cylinder Head Characteristics: dished Pin Dimensions: 14x10x41 Displacement: 85 Cast Or Forged: forged Bore Diameter: 52.95