3804 LLB - Double-Row, ABEC-3 Angular-Contact Bearing - 20mm x 32mm x 10mm TH-873 ACB 6808 CC SXD 1-1/2

ACB 6808 CC SXD 1-1/2 XD15 Angular Contact Headset bearing (40mm x 52mm x 6

SE MR 2441 AL 6061 - 24mm (Shimano) Bottom Bracket Seal - 24mm x 41mm

as found in all hubs and pivots

and are designed to work with the Pre-Load systems that every crank uses now

3804 LLB - Double-Row, ABEC-3 Angular-Contact Bearing - 20mm x 32mm x 10mm TH-873 ACB 6808 CC SXD 1-1/23804 LLB Double Row, ABEC 3 Angular Contact bearing 20mm x 32mm x 10mm Applications include use in rear hubs and by many bike brands as a suspension pivot bearing including Rocky Mountain, though the MAX type version of this bearing is better suited to suspension pivot applications. The double row design greatly reduces flex in suspension linkages and rear hub axles, while requiring roughly 25% less width than two single row, comparable bearings. This