BKCJ-0341 - 11 tooth, XD15 Ceramic Hybrid Bearing, Machined Delrin Derailleur Pulleys for 11 speed Shimano Dura Ace (9000 Series) and Ultegra (8000 Series) Derailleurs (5mm bolt hole) - Black sale 5 inch aluminum fork crown

5 inch aluminum fork crown race for 36° inner chamfer headset bearings

BGK-Maxhit - One pair of Maxhit headset guides for BRT-058 or BRT-050 (3/8" Acme) Headset presses

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

BKC-0848 - TorqTite

The most common use for this bearing is as a direct replacement bearing for Shimano bottom brackets with a 24mm OD spindle

BKCJ-0341 - 11 tooth, XD15 Ceramic Hybrid Bearing, Machined Delrin Derailleur Pulleys for 11 speed Shimano Dura Ace (9000 Series) and Ultegra (8000 Series) Derailleurs (5mm bolt hole) - Black sale 5 inch aluminum fork crownBKCJ 0341 11 tooth, XD15 Ceramic Hybrid Bearing, Machined Delrin Derailleur Pulleys for 11 speed Shimano Dura Ace (9000 Series) and Ultegra (8000 Series) Derailleurs (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. Designed and manufactured for performance, these pulleys