MUQZI 12T+14T Ceramic Bearing Jockey Wheel, MTB Bike Rear Derailleur Pulley Wheels for Shimano Sram Ultegra Rear Derailleur Etc.

MUQZI 12T+14T Ceramic Bearing Jockey Wheel, MTB Bike Rear Derailleur Pulley Wheels for Shimano Sram Ultegra Rear Derailleur Etc.

• Ceramic Bearing Pulleys: The bike rear derailleur pulley wheels uses ceramic bearing, can reduce the resistance during cycling, which ensures fast and sensitive working. Improve riding efficiency
• 2023 New Upgrade Design: The design of positive and negative tooth shapes better fits the chain, reduces friction, and can effectively reduce chain dropout, resulting in smoother transmission
• Designed for 6-12 speed: This jockey wheel pulley is specially designed for 6-12 speed chains. It fits almost all mountain bikes and road bikes. In addition, it is also suitable for other bicycles with rear derailleur
• More Compatible: Made of aluminum alloy material, with upgraded CNC process. Fits SHIMANO SRAM Road Ultegra rear derailleurs
• How to Choose: Please choose the same size as your original pulley. If not totally the same, choose the smaller size, never choose the bigger than the original ones