This Kyosho BRG417 pack provides two shielded bearings in the common 7x14x4 size for use in drivetrain mountings, wheel hubs and compact rotating linkages. The shielded design reduces ingress of debris while enabling smooth rotation in confined spaces. The size code 7x14x4 refers to bore, outer diameter and width so you can confirm fitment with your axle and housing measures.
Fit them with care: press on the outer race to avoid damaging the internal rolling elements, verify the shaft diameter and housing bore before final seating, and retain with the model's original spacers or snap rings where applicable. Two bearings per pack let you fit matched positions or keep a spare for roadside service.
To maintain performance, keep the shield faces free of grit and do not force heavy lubricants into the shield gap. Small amounts of specialised bearing oil applied sparingly will extend life and lower resistance. Replacing worn bearings typically removes steering vagueness and drivetrain noise without altering geometry or gear ratios.
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