Using premium quality 7075-T6 aluminium as the base material, Hiro Seiko pinions are hard anodized for increased surface hardness and wear resistance.

The pinions are then impregnated with Molybdenum Disulfide (MoS2), an inorganic compound with lubricating properties, for ultra low friction.

Molybdenum Disulfide is widely used in engine lubricants and grease for construction machinery.