Piston Sizing

Step 1: Measure the Cylinder Bore and Piston Outer Diameter

Begin by accurately measuring the diameter of your cylinder bore and the outer diameter of the piston. Common stock sizes include 47mm, 52.4mm, 54mm, and 60mm.

Step 2: Measure the Wrist Pin Outer Diameter

Next, determine the outer diameter of the wrist pin. The most prevalent sizes are 13mm and 14mm, with some variations measuring 15mm.