Chain removal used to require breaking a pin with a chain tool and hoping you didn't damage the plates in the process. The Shimano SM-CN900-11 Quick-Link solves that problem for anyone running an 11-speed Shimano drivetrain, letting you split the chain by hand for cleaning, waxing, or a roadside repair. This 2-pack gives you one for the install and one for the seatbag or workbench.

The link works with Shimano's HG and Linkglide 11-speed chains, covering CN-HG901, CN-HG701, and CN-HG601 across road, mountain, and e-bike drivetrains. SIL-TEC surface treatment matches the finish on Shimano's higher-tier chains, so the link wears at the same rate as the rest of the chain rather than becoming the weak spot. Installation is tool-free—line up the pins, seat the plates, and pull the chain taut to lock it. Shimano's TL-CN10 pliers make removal easier if you're pulling the chain off regularly for cleaning, but you don't need any tools to get it on.

One thing to know before you buy: Shimano rates this quick-link as single-use. Once you've installed it and put load through it, the locking tolerances are considered spent, and reinstalling a used link risks incomplete engagement under pedaling force. If you're on a wax program and pulling the chain weekly, plan on going through these at a steady clip—that's part of why the 2-pack makes sense over the single. Keep one in your saddlebag for the mid-ride chain break, and use the other next time the chain comes off for service.