Bore 85.5mm Bore (in) 3.366 in. Bore (mm) 85.500mm Comp Height 35 Comp Ratio 9.0:1 Compression Distance (in) 1.378 in. Dome Volume -10 Gram Weight 349 Pin Diameter (in) 0.827 in. Piston Head Volume (cc) +10.00cc Piston Material Forged aluminum Piston Ring Thickness 1.0mm x 1.2mm x 2.8mm Piston Style Dish Quantity Sold individually. Rod 150 Stroke 88 Wrist Pin Style Press-fit or floating