Gemini ÖGLE Carbon Pulley Wheels for Shimano Dura-Ace Di2 – Ceramic Bearings

Refine your road bike’s drivetrain with Gemini ÖGLE carbon pulley wheels for Shimano Dura-Ace Di2. Handcrafted in Barcelona, these lightweight jockey wheels combine forged carbon construction, hybrid ceramic bearings and a distinctive enclosed design.

The 12-tooth upper and 14-tooth lower pulleys fit the original Dura-Ace Di2 derailleur cage, allowing you to upgrade your pulley wheels without replacing the complete cage. Their larger diameter is designed to reduce chain articulation, while ceramic-ball bearings support smooth rotation.

Key features

• Forged carbon pulley wheels: lightweight construction with carbon fibres moulded continuously around the teeth.

• Hybrid ceramic bearings: precision bearings with ceramic balls, designed for low rotational friction.

• Original cage compatibility: fits the standard Shimano Dura-Ace Di2 cage without an aftermarket cage conversion.

• Enclosed, spokeless design: a clean aerodynamic profile that helps limit debris entering through the pulley body.

• Anodised aluminium covers: complete the bearing assembly.

• Handcrafted in Barcelona: designed and manufactured in-house by Gemini.

Specifications

• Compatibility: Shimano Dura-Ace Di2 11- and 12-speed

• Upper pulley: 12T

• Lower pulley: 14T

• Material: forged carbon with aluminium covers

• Bearings: hybrid ceramic

• Claimed set weight: 22.2 g, including bearings and covers

A considered finishing touch for a custom road build or Dura-Ace drivetrain upgrade. Contact Machine if you need help confirming compatibility.