GEMINI
GEMINI Ögle Aero Carbon Pulley/Jockey Wheel | Shimano Dura-Ace, Ultegra, 105, GRX, XTR, XT, Deore XT
GEMINI Ögle Aero Carbon Pulley/Jockey Wheel | Shimano Dura-Ace, Ultegra, 105, GRX, XTR, XT, Deore XT
Pre-Order - Ships in Approximately 4 Weeks
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Forged carbon pulleys, hybrid ceramic bearings | 22.2g to 29g per set | Oversized to fit your stock derailleur cage | Handcrafted in Barcelona
Ögle pulleys are built with the same continuous fiber molding process as Gemini's carbon chainrings. The forged carbon structure cuts weight without giving up stiffness, sharpening shifting response and pedaling smoothness.
Each set uses the largest tooth size your derailleur's stock cage can take without modification or compromising shifting performance: 12/14T, 12/16T, 14/16T, or 14/20T depending on the groupset, so you get oversized pulleys without swapping the whole cage.
The fully enclosed, spokeless design keeps road debris out of the derailleur while improving aerodynamics. High-precision hybrid bearings with ceramic balls cut rotational resistance versus a standard sealed bearing, and the larger pulley diameter opens the angle at which each chain link enters and exits, reducing articulation friction. Aluminium covers finish the assembly for a precise fit and added durability.
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Features
- Forged carbon pulley body, continuously moulded around the teeth rather than injection-moulded plastic or machined carbon
- Hybrid bearings with ceramic balls for smoother rolling and lower friction
- Fully enclosed, spokeless design blocks debris and improves aerodynamics
- Anodised aluminium covers for a precise fit and durability
- Oversized tooth count matched to your stock derailleur cage, no aftermarket cage required
- Larger pulley diameter reduces chain articulation angle and friction
- Handcrafted in Gemini's Barcelona workshop
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Specifications
Set weight, with bearings and covers assembled:
12T/14T: 22.2g
12T/16T: 23.9g
14T/16T: 25.1g
14T/20T: 29g
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Compatibility
Compatible with 1x11, 1x12, 1x13, 2x11, and 2x12 drivetrains, and standard derailleur systems. Tooth size is matched to your specific derailleur:
- Shimano Dura-Ace Di2 11/12 speed: 12T / 14T
- Shimano Ultegra Di2 12 speed: 12T / 14T
- Shimano GRX 11 speed: 12T / 14T
- Shimano XT 12 speed: 12T / 14T
- Shimano XTR 12 speed: 14T / 16T
- Shimano Deore, XT, XTR Di2 12 speed: 14T / 16T
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Links
Warranty
Warranty
If you have detected any defect, damage or unusual behaviour on your GEMINI product, stop using it immediately. Using a damaged component may compromise your safety. To evaluate the case, we will need clear photos, a detailed description and proof of purchase.
Warranty coverage
The warranty is intended to cover manufacturing defects. It does not cover damage caused by crashes, accidents, incorrect assembly, misuse or normal wear.
Period
The warranty lasts 3 years from product delivery, provided the conditions stated in our policy are met.
Coverage
It covers manufacturing defects or issues caused by a product failure attributable to the manufacturing process.
Solution
If the case is approved, we will assess repair or replacement of the defective product when applicable.
Not covered
- Crashes, impacts or accidents.
- Incorrect assembly or improper torque values.
- Misuse, normal wear or lack of maintenance.
- Unauthorized modifications or external product damage.
How your request is reviewed
Once we receive the information, our technical team will review the case and contact you if we need more details.
Initial information
We will need your order number, invoice or proof of purchase, clear product photos, affected area and a detailed description of the issue.
Technical review
We will review the information sent to make an initial assessment. If needed, we may ask for additional details.
Resolution
If the warranty is approved, we will indicate the corresponding solution depending on the case: repair, replacement or another suitable alternative.
Crash Replacement Program
Crash Replacement Program
If your product has suffered an impact or shows visible or structural damage, stop using it immediately. Carbon can suffer internal damage that is not visible, and continuing to use it may compromise your safety.
This program does not replace the warranty. Warranty covers manufacturing defects; the Crash Replacement Program is intended for damage caused by crashes, impacts or accidents.
The program
The Crash Replacement Program allows original GEMINI customers to access a special discount to replace a component damaged by a crash or impact.
Who it is for
For original customers who purchased a GEMINI product and whose component has been damaged due to a crash, impact or accident.
What it applies to
It applies to GEMINI components damaged by accident, provided we can review the case and validate the request.
What we need
- Invoice or proof of purchase.
- Clear photos of the product and damaged area.
- Description of what happened.
- Information about the affected product.
Important
To access the program, we may request the damaged component to be sent for review or recycling. Each case will be assessed individually.
Discount table
The applicable discount depends on the time elapsed since the original purchase date.
- 50%: From 0 to 24 months after the purchase date
- 35%: From 25 to 36 months after the purchase date.
- 25%: From 37 to 48 months after the purchase date.
- 15%: From 49 months onwards after the purchase date.
How it works
Complete the form with as much information as possible. Our team will review your case and contact you to confirm if you can access the program and which discount applies.
Submit your request
Fill in the form with your details, affected product, photos of the damage, invoice and a short explanation of what happened.
Case review
Our team will review the information provided and may request additional details or the damaged component to be sent.
Resolution
If the request is approved, we will confirm the applicable discount and the next steps to replace the component.

Frequently Asked Questions
Can I use Rigel for any type/brand of chain?
Rigel's tooth design has been developed to be compatible with any chain on the market for 11 and 12 speeds, for both Shimano, SRAM Eagle, and SRAM Eagle Flat Top chains.
Do I have to put on a new chain when mounting a new Rigel?
If you want to maximize the life of your Rigel chainring, we recommend using a new chain when installing it and monitoring its wear. This will extend the life of your RIGEL carbon chainring by many miles.
How long can Rigel last?
Defining a general durability for a component of this type is impossible, as its lifespan depends on the power the rider applies when pedaling, the elevation gain, maintenance, etc. These are all factors that can determine why some cyclists may ride more kilometers than others, just like with a conventional aluminium chainring.
For this reason, we cannot give you a specific figure. Please note that the core is made of metal, which means its durability is higher than that of any other carbon fibre chainring.
How can I know if the offset suits my bike's needs?
The 6.5mm offset is compatible with all bikes that have a 142mm BOOST rear hub setup.
Is it really the lightest plate in the world?
Yes, it's the lightest Direct Mount chainring. The 30T, SRAM 3-bolt version weighs around 39g, as it primarily uses carbon fiber for both the frame and the teeth, despite having an internal metal core used solely to extend its lifespan.
What maintenance does it need?
We recommend lubricating your drivetrain with a dry lubricant to prevent particles from adhering to the chain and causing premature wear on your RIGEL carbon chainring.
Keeping your drivetrain clean and well-lubricated will extend the life of your RIGEL.
What makes Rigel technology so special?
Rigel is made from Forged Carbon, resulting in a continuous fiber structure within the tooth that is unattainable with traditional carbon fiber manufacturing processes.
In addition, its internal metal core provides superior wear performance of the carbon teeth.
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