66.75mm OVERSIZE 0.75 [OS 66.70mm]. All Vertex Pistons Feature: - Standard pistons and components are OEM replacements.
Kits include piston, rings, wrist pin and circlips. All pistons are heat treated with a T-5 or T-6 hardening and tempering cycle. Picture for reference only shows a typical piston kit. We are not just an internet based company we have a full retail shop.