This is a top overhaul kit featuring 2 new dual ring pistons, pins, circlips and rings , gasket seal kit for the 462 series  rotax engines..

This aftermarket set exceeds the MFGs specs and features the following.

These stronger pin boss, less skirt friction and better heat transfer that the elkos

 These custom sets come with a matching gaskets and seals.

This set is for std bore 462 rotax 69.50 MM bore

Photo is of a similar but not exact set