Park Tool Replacement Chain Tool Pin Kit

This kit is specifically designed for the CT-4.3, CT-4.2, CT-4, and CT-11 chain tools. It will not fit other models, so please verify your tool's model number before purchasing.

You should replace the pin if you notice it has become bent, mushroomed, or if it is no longer pushing chain pins out smoothly. A worn pin can damage your chain, so it is best to swap it out as soon as you see signs of degradation.

Not at all. The process is straightforward and requires only basic tools to remove the cap on your chain tool. Once the cap is off, you can simply swap out the old pin and ball bearing for the new ones.

The ball bearing is a critical component of the tool's internal mechanism that helps ensure smooth, consistent operation. It is included in the kit because it can easily be lost during maintenance or may wear down over time alongside the pin.

Yes, these are made from the same hardened steel as the original pins that came with your tool. They are designed to meet the exact durability and performance standards required for professional-grade chain maintenance.