If you’ve ever removed the rear wheel of your bike-for cleaning, maintenance, or travel-you’ve likely faced the same problem:
a loose, dangling chain and a vulnerable rear triangle. Without support, the chain can tangle or scratch the frame, while the rear derailleur and stays risk bending under pressure.
This is where a Dummy Hub (also known as a chain keeper or bike maintenance tool) comes in. A dummy hub replaces the rear wheel axle when the wheel is removed. It keeps the drivetrain aligned, maintains chain tension, and protects the rear triangle from compression damage.
Meet the Granite ChainDock Dummy Hub
The Granite ChainDock Dummy Hub is designed to do more than just hold your chain in place. It’s a lightweight, durable, and versatile solution for both bike travel protection and everyday maintenance.
Whether you’re boxing your bike for an overseas race, loading it into a car for a weekend ride, or performing routine cleaning, the ChainDock ensures your bike stays safe and your maintenance runs smoothly.
Key Features of the ChainDock Dummy Hub
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Ultimate Protection – Safeguards the rear triangle from compression damage when the wheel is removed, especially during airline transport.
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Perfect Fit – Adjustable length from 130mm–157mm, covering most hub sizes and fitting a wide variety of road and MTB frames.
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Enhanced Chain Management – Features an integrated chain docking wheel that keeps the chain straight and allows you to spin the crank for smooth cleaning and adjustment.
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Wide Compatibility – Works with both Quick Release (QR) and 12mm thru-axle setups, so one tool fits multiple bikes.
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Robust Construction – Made from 6061 alloy, combining strength with lightweight durability, only 120g. Perfect for both travel and workshop use.
Practical Use Cases
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Airline Travel & Race Transport – Protects your frame from heavy luggage pressure.
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Bike Cleaning – Keeps the chain aligned after wheel removal, making it easier to scrub and lubricate.
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Workshop or Team Support – A must-have for mechanics handling multiple bikes.
How to Use the ChainDock Dummy Hub
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If your bike uses a quick-release dropout, insert the QR adapter. |
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Adjust the Chaindock to match the length of your rear dropout, then hand-tighten the orange lock nut. |
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Place the chain onto the pulley wheel and insert the QR or 12 mm rear axle to secure the Chaindock in position.
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Rotate the crank, clean, or transport your bike with confidence. |
Final Thoughts
The Granite ChainDock Dummy Hub may look like a small accessory, but it plays a big role in keeping your bike safe and ready to ride.
With one tool, you get:
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Bike travel protection during flights or transport.
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Chain keeper functionality for smooth maintenance.
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Universal compatibility across QR and thru-axle systems.
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Lightweight, durable construction that lasts.
From international race travel to routine garage cleaning, the ChainDock is the dummy hub that protects your bike on the go and simplifies every maintenance step.
Discover the Granite ChainDock Dummy Hub and make it part of your essential bike toolkit today.
