`- Direct replacements for BB86/92 systems \n- Dual-row flanged bearings press directly into 41mm ID smooth bore bottom bracket shells\n- Fits bottom bracket shell widths from 86.5mm to 107mm\n- WZ-9770 and 9771 are compatible with 30mm diameter cranks with a spindle length of at least 104mm\n- WZ-9771: includes (2) Enduro BB86 to 30mm dual-row sealed bearings, (2) 0.5mm spacers, (2) 1.0mm spacers, (2) 5.0mm spacers, and (2) Enduro silicone seals\n- WZ-9770: include (1) Enduro BB86 to 30mm dual-row sealed bearing\n- Base: Enduro ABEC 3 sealed bearings