Spacer for the cylinder base. This allows a cylinder to be raised by the specified amount. Designed to compensate for a longer connecting rod, e.g. by installing a modified PX200 crankshaft in a PX125 housing. The 5mm longer connecting rod of the PX200 (110mm) can be perfectly compensated by the spacer.

Without cut-outs for the overflow channels to have maximum freedom when reworking the engine/cylinder.