FSA Superlight M128R Alu Bearing for Drop In Campy IS52 Headset

A weight-reducing upgrade for any bike. Featuring an aluminium housing for a low weight and steel races and balls for durability. Super Light ACB ball bearing for Drop In Campagnolo (45°x45°) headsets. Outer diameter 52.1 mm (IS52), inner diameter 1.5 inch. Included in delivery: 1 bearing Material: housing: aluminium, races/balls: chrome steel Weight supplement: per bearing, manufacturer information