Cannondale Scalpel Si Rear Derailleur Hanger

This hanger, model KP432, is specifically engineered for Cannondale Scalpel Si frames utilizing 142mm rear dropout spacing. Always verify your frame's specific model year and axle standard, as derailleur hangers are frame-specific and not universal.

A derailleur hanger is designed as a sacrificial part; it is meant to bend or break during an impact to protect your bike's frame from expensive damage. Having a spare on hand ensures you can perform a quick trailside repair and continue your ride instead of walking out.

While some hangers can be temporarily straightened with a dedicated alignment tool, the metal is often weakened during the process. Replacing a bent hanger with a new one is the only way to guarantee precise shifting and prevent future mechanical failures.

Installation is straightforward and typically requires only a basic set of hex keys to remove the old hanger and secure the new one. Ensure the mounting bolts are tightened to the manufacturer's recommended torque specifications to prevent shifting issues.