Angular contact bearings provide maximum load distribution across all of the ball bearings unlike standard bearings which load only those at the bottom of the bearing this load distribution ensures bearing life is increased drastically allowing for more time spent in the saddle than the workshop bearing code acb 4545 125 bo dimensions 302x418x65mm abec 3 grade 10 seals 2rs grease kyodo yushi ps 2 application headsets weight 1924g