The Performance Standard for Specialized Classics.

The Wheels Mfg Derailleur Hanger #73 is a high-precision, CNC-machined upgrade designed specifically for a vast era of Specialized frames. While the original equipment (OEM) hangers on these bikes were typically made from softer cast aluminum—which could flex under the high cable tension of modern shifting—the #73 is carved from a solid block of 6061-T6 aircraft-grade aluminum. This results in a stiffer, more durable hanger that provides a more stable foundation for your rear derailleur.

Produced in Colorado, USA, this "2-bolt" style hanger is a favorite among mechanics for restoring the "crispness" to older Specialized drivetrains. Because it is machined to much tighter tolerances than cast parts, it eliminates the "vague" shifting often found on bikes that have suffered from years of minor knocks or frame-flex. Whether you are maintaining a classic Tarmac or an early-generation Stumpjumper, the #73 ensures your indexing remains pitch-perfect.

Key Features

• CNC Machined 6061-T6 Aluminum: Provides significantly more rigidity than original cast hangers, resulting in faster and more accurate gear changes.

• Tough Black Anodised Finish: Offers a durable, corrosion-resistant surface that stands up to the grit and degreasers of regular drivetrain maintenance.

• Dual-Bolt Interface: Attaches securely to the frame using two M4x8 Flat Head Screws (included), ensuring the hanger cannot pivot or loosen under load.

• Exact Workshop Alignment: Machined to professional-level tolerances, ensuring your derailleur sits perfectly parallel to your cassette for optimal chain line.

• Made in the USA: Manufactured in Wheels Manufacturing’s Colorado facility for guaranteed quality and longevity.

Technical Specifications