BKS-54102 - 440C Stainless, Angular Contact, Bottom Bracket Bearing Kit for Shimano 24mm x 37mm External Cup BBs sale these pulleys feature CN (tight

these pulleys feature CN (tight clearance) bearings in the upper pulley to maximize shifting accuracy and C4 (loose clearance) bearings in the lower pulley to allow for chain-line movement

For bearing servicing:

Static load - 306lbf / 1

The eleven-tooth upper and thirteen-tooth lower size and profile with 5mm bolt-holes are designed as an upgrade for most 11-speed Shimano GRX derailleurs

BKS-54102 - 440C Stainless, Angular Contact, Bottom Bracket Bearing Kit for Shimano 24mm x 37mm External Cup BBs sale these pulleys feature CN (tightBKS 54102 stainless steel, Angular Contact, Bottom Bracket Bearing Kit for Shimano 24mm x 37mm External Cup BBs This kit includes two 440C stainless steel, Angular Contact bearings along with all of the necessary seals and spacers to complete a precise, professional installation. Enduro Angular Contact, 440C stainless steel balls and racesprovide long life and superior corrosion resistance in applications and environments that may be less than ideal.