Oversized Derailleur Pulleys for Shimano Dura Ace R9200 - Full Ceramic - 12/14T Color:Gold making them an excellent choice

making them an excellent choice for riders who value longevity alongside performance

Kogel Speed Kolossos for Shimano GRX 2x (11 & 12-Speed

Weight: approx

For GRX 1x set ups

Oversized Derailleur Pulleys for Shimano Dura Ace R9200 - Full Ceramic - 12/14T Color:Gold making them an excellent choiceThese oversized pulleys fit the newest version of Dura Ace R9200, Shimano's flagship 12 speed drivetrain. Plus, these are full ceramic meaning ceramic bearings AND races that give you the highest level of efficiency so you can go even faster with less energy. By using the standard cage on your Shimano derailleur, you will feel the benefits of reduced articulation in the chain, while retaining accurate shifting; something that has been a negative side