KMC MissingLink - 12 Speed - Aurora Blue - 2 Pack

The KMC MissingLink is designed for 12-speed chains, providing a reliable and convenient solution ...

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KMC 12NR 12 Speed Non Re-Useable MissingLink Joining Link, Aurora Blue, 2 Pairs,

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Merlin CyclesKmc Aurora Blue Missinglink 12Nr - 2 Pack - / 12 Speed / Pack Of 2

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Product Information

Full details

The KMC MissingLink 12-Speed (Aurora Blue) is an essential component for cyclists who prioritize roadside maintenance convenience and chain reliability. Designed for use with 12-speed drivetrains, these links allow for tool-free installation and quick chain repairs during long rides or touring expeditions. While they offer exceptional ease of use, it is important to remember that these are single-use components that must be replaced if removed from the chain.

All features

Model Part Number	CL552-AURORA
Brand	KMC

Extended Product Information

FAQs

Are these links reusable?

No, the KMC 12-Speed MissingLink is designed for single use only and should be replaced if removed.

Can I use this on an 11-speed chain?

No, this link is specifically engineered for 12-speed chain geometry and is not compatible with 11-speed or other drivetrain speeds.

Which brands of chains are compatible?

These links are compatible with Shimano, Campagnolo, KMC, and SRAM 12-speed chain systems.

Do I need special tools to install this?

Installation can often be done by hand using pedal pressure, though a master link tool is highly recommended for easier removal.

How many links are in the package?

The pack includes two complete pairs, totaling 4 individual pieces, enough to repair two separate chain breaks.

Troubleshooting

Link will not lock into place

Ensure the chain is properly threaded and use a firm, sudden pressure on the crank arm to snap the link into the locked position.

Link clicks or skips during pedaling

Verify the link is fully seated and that the chain is not routed incorrectly through the derailleur cage.

Difficulty removing the link

Use a dedicated master link removal tool rather than attempting to pry it open with screwdrivers or pliers, which can damage the chain.

Pros and Cons

Pros

Tool-free installation capability
Broad compatibility across major 12-speed brands
Compact and lightweight for saddlebag storage
High-quality Aurora Blue finish for easy identification

Cons

Designated as single-use only
Requires specific pliers for optimal removal
Not compatible with 11-speed or lower drivetrains

Setup, Compatibility & Care

To install, thread the two halves of the MissingLink through the chain ends from opposite sides, then pull the chain ends apart until the pin locks into the elongated slot. While installation is often possible by hand using firm pressure on the pedals, a master link tool is recommended for both installation and especially for removal. These links are strictly for single use; if you remove the link for cleaning or maintenance, discard it and install a fresh one to maintain structural integrity. Ensure your drivetrain is clean to prevent premature wear on the link pins.