Wheels Manufacturing Derailleur Hanger 121

This specific hanger is engineered for compatibility with select Opera, Pinarello, and Stevens frames. Because derailleur hangers are frame-specific, we strongly recommend visually comparing your current hanger to the product images or checking your bike manufacturer's documentation before purchasing.

Yes. While many stock hangers are cast, this Wheels Manufacturing replacement is CNC-machined from 6061 aluminum. This manufacturing process creates a more precise, durable part that is generally stronger and more resistant to bending than standard cast alternatives.

Yes, the package includes the two necessary M4x8 flat head screws. You will just need a standard hex key to complete the installation.

The anodized finish is more than just aesthetic; it provides a protective layer that significantly improves the aluminum's resistance to corrosion. This helps the hanger maintain its structural integrity and appearance, even when exposed to sweat, road grime, and wet riding conditions.

While some hangers can be straightened, it is often a temporary fix that weakens the metal. Replacing a bent hanger with a new, precision-machined unit like this one is the most reliable way to restore your bike's shifting performance and prevent future drivetrain issues.