Piston: Specifications

Piston - Piston Diameter - @14.5 mm up 87.967-87.982 mm (3.4633-3.4638 in)
Piston - Piston Pin Bore Diameter 20.004-20.009 mm (0.7876-0.7878 in)
Piston - Piston Ring Groove Width - Oil Control 2.51-2.53 mm (0.0988-0.0996 in)