Campagnolo's 12-speed chains require a specific pin for joining, and the CN-SR600 Ultra-Link is the only pin that works with the 5.15mm width chain that runs on Record and Super Record drivetrains. The pin design differs visibly from the two-tone 11-speed version—the CN-SR600 has a uniform finish across its entire length, which Campagnolo refers to as a union bushing. You can't substitute an 11-speed pin or use pins from other manufacturers without voiding the warranty on your drivetrain components.

Installing the CN-SR600 requires Campagnolo's UT-CN300 or UT-CN400 chain tool, which features a tapered tip on the driving pin that's specifically designed for the flush pin design of 12-speed chains. The tool both drives the pin through the chain plates and peens it to create a secure connection. Campagnolo specifies that if the tapered tip shows any damage or wear, you need to replace it immediately with their UT-CN301 spare pin because a damaged tool tip can compromise the chain connection. A poorly installed pin can open suddenly under load, which creates obvious safety concerns when you're out of the saddle or descending.

Each chain can be opened and closed twice maximum using the Ultra-Link pin. After two installations, the pin and the affected chain links lose their structural integrity, and attempting a third connection risks chain failure. If you're sizing a new chain out of the box or need to remove the chain for deep cleaning or component service, track how many times you've used each section of chain with a pin.