BKC-0652 - TorqTite, Ceramic, XD15 Corsa, 45 degree Angular Contact, Bearing Bottom Bracket for PF30 Framesets to 30mm Cranksets (under 90mm spindle length) Blue TH-873 NB 12x18x16 2RS - HK

NB 12x18x16 2RS - HK 1216 2RS High Chromium Steel Drawn-Cup Needle Bearing - 12mm x 18mm x 16mm

71902 LLB - ABEC-5 Angular-Contact Bearing (C3 clearance) - 15mm x 28mm x 7mm -

While stainless steel has approximately 20% less load capacity and is slightly softer than the 52100 chromium steel used in most standard bearings

15mm ID shock-eye and 18mm mount width

while the lighter-contact (less seal-drag) LLB seals facing inward keep the lube where it belongs

BKC-0652 - TorqTite, Ceramic, XD15 Corsa, 45 degree Angular Contact, Bearing Bottom Bracket for PF30 Framesets to 30mm Cranksets (under 90mm spindle length) Blue TH-873 NB 12x18x16 2RS - HKBKC 0652 TorqTite, Ceramic, XD15 Corsa, 45 degree Angular Contact, Bearing Bottom Bracket for PF30 Framesets to 30mm Cranksets (for older specification spindles under 90mm wide) You may find the following tools useful for installation and servicing: For bottom bracket installation: BRT 060 MH Bearing press rod and handle set BRT 040 30MM Bottom bracket bearing removal and installation toolkit for 30mm bearings; for use with BRT 060 bearing press BBT