ICS aluminium piston head (oversized)

ICS piston head oversize (NBU) have built-in pressure bearings to reduce friction from the spring. The piston head are ventilated making sure that the rubber seals are pressed against the cylinder sides when the air is compressed. This gives optimal compression of the air and minimizes wear and tear on the rubber seal.

Only for oversize cylinders (IC-MC-71, IC-MC-58).