BKCJ-0457 - Directline 11 tooth/13 tooth, XD15 Ceramic Hybrid Bearing, Machined Delrin Derailleur Pulleys for 11 and 12 speed Shimano GRX Derailleurs (5mm bolt hole) TH-873 The single seal specification is

The single seal specification is designed for use with grease injection systems like those found in linkages on older Intense VPP Bikes

Angular Contact

so Enduro carries the loose balls you need to complete the job

This bottom bracket may require two tool sizes for proper installation

BKCJ-0457 - Directline 11 tooth/13 tooth, XD15 Ceramic Hybrid Bearing, Machined Delrin Derailleur Pulleys for 11 and 12 speed Shimano GRX Derailleurs (5mm bolt hole) TH-873 The single seal specification isBKCJ 0457 11 13 tooth, XD15 Ceramic Hybrid Bearing, Machined Delrin Derailleur Pulleys for 11 and 12 speed Shimano GRX Derailleurs (12 speed 2x derailleurs RD RX 820 & RD RX 825) (5mm bolt hole) The ultimate upgrade pulley. Guaranteed to last forever against corrosion Precision machined Delrin Derailleur pulleys featuring XD15 Ceramic Hybrid radial bearings for enhanced shifting performance and longevity. The updated Directline design features larger