Cannondale Derailleur Hanger

This hanger is specifically engineered for Cannondale Trigger and Jekyll models. You should verify your bike's specific model year and frame series against the part number CK3257U00OS to ensure a perfect fit.

A bent hanger misaligns the derailleur, which causes poor shifting and can lead to the chain dropping or the derailleur cage striking your spokes. Replacing it promptly prevents costly damage to your drivetrain and rear wheel.

Yes, this is designed as a direct replacement part. You will typically only need a set of hex keys to remove the old hanger and bolt the new one into place, though you may need to re-index your gears afterward.

This product includes the hanger itself. We recommend keeping your original mounting screws if they are in good condition, or sourcing the specific hardware kit recommended by Cannondale if your existing bolts are stripped or damaged.

It is a smart practice to keep a spare in your gear bag. Because hangers are designed to be the 'weak link' that breaks to protect your frame during an impact, having a replacement on hand can save your ride if you take a spill on the trail.