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Overview

What Is the Shimano SM-CN910-12 Quick-Link For?

The Shimano SM-CN910-12 is the 12-speed chain quick-link (master link) for connecting and disconnecting Shimano 12-speed chains tool-free. Quick-links make chain removal for cleaning or replacement significantly faster than traditional chain pins. Snap the link together for installation. Quick-link pliers make removal easier. The SM-CN910-12 is sized specifically for 12-speed chains and is not interchangeable with 11-speed or other speed quick-links. Each link is single-use. Replace with a new quick-link every time the chain is removed.

Compatible with Shimano HG 12-speed chains: XTR CN-M9100, XT CN-M8100, SLX CN-M7100, and Deore CN-M6100. Dura-Ace R9200 uses the CN-M9100. Sold as 2 pairs for on-hand redundancy during maintenance.

All the specs

MPN ISMCN91012A

Model
SM-CN910-12
Speed
12-speed
Type
Chain quick-link (master link)
Quantity
2 pairs
Use
Single-use only, replace after each chain removal
Compatible
Shimano HG 12-speed chains (XTR CN-M9100, XT CN-M8100, SLX CN-M7100, Deore CN-M6100)

FAQ

Good questions

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Can I reuse a quick-link after removing my chain?

No. Shimano quick-links are single-use only. Each time the chain is removed and reinstalled, a new quick-link must be used. Reusing a quick-link risks premature failure during riding.

Is the SM-CN910-12 compatible with 11-speed chains?

No. Shimano lists the SM-CN910-12 for HG 12-speed chains only. For 11-speed chains, use the SM-CN900-11 quick-link. Shimano lists that link for HG 11-speed and LINKGLIDE chains.

Do I need special tools to install a quick-link?

No. Installation is tool-free: fit the quick-link and snap it closed with a firm pedal stroke. Removal is easier with quick-link pliers.

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