These Kogel pulleys will fit perfectly on your Shimano Dura-Ace R9000 and Ultegra R6800 derailleurs as an oversize upgrade and Shimano 10 and 11 Speed MTB Derailleurs. The narrow wide tooth profile on the top pulley helps to retain shifting accuracy by pushing every link of the chain. These Kogel 12 tooth pulley wheels are built to last: aluminium cogs, serviceable Grade 3 ABEC-5 Hybrid ceramic bearings. (Road seals). This road seal version runs with minimal contact seals to achieve the lowest friction.
Kogel's ceramic derailleur pulleys run on the same trusted ceramic bearings that are used in their bottom brackets. Using aluminium instead of plastics for the wheels makes them durable, especially for off road use
• Shimano Dura-Ace R9100
• Shimano Ultegra R8000
• Shimano 105 R7000
• Shimano Dura-Ace R9000
• Shimano Ultegra R6800
• Shimano 10 and 11 Speed MTB Derailleurs