3801 LLU MAX BO - MAX-Design, Double-Row, Black-Oxide, Angular-Contact, Suspension Bearing - 12mm x 21mm x 8mm TH-873 There are also quite a

There are also quite a few suspension designs that utilize custom versions of this size

This tool allow you install PF30

or can be mixed to provide more or less leverage (they spin best when the lengths are the same)

Our bearings are always engineered with deep groove races to accommodate the largest balls possible

3801 LLU MAX BO - MAX-Design, Double-Row, Black-Oxide, Angular-Contact, Suspension Bearing - 12mm x 21mm x 8mm TH-873 There are also quite a3801 LLU MAX BO MAX Design, Double Row, Black Oxide, Angular Contact Suspension Bearing 12mm x 21mm x 8mm Enduro Bearings pioneered MAX type bearings over 20 years ago for bicycles to address the challenges associated with mountain bike pivots. MAX type bearings provide 35 40% more load capacity than standard Angular Contact bearings by utilizing a special design where the maximum number of balls are inserted into the bearing, via a custom ground slot