The Precision Machined Upgrade for Modern Performance Frames.

The Wheels Mfg Derailleur Hanger #172 is a premium, CNC-machined replacement designed for a specific generation of high-performance frames from brands like Felt, Corratec, and Kona. While original equipment (OEM) hangers are often made from softer, cast aluminum that can flex under the high cable tension of modern 11 and 12-speed drivetrains, the #172 is carved from a solid block of 6061-T6 aircraft-grade aluminum. This extra rigidity provides a much more stable foundation for your derailleur, resulting in crisper gear changes and better resistance to "ghost shifting."

Manufactured in Colorado, USA, the #172 is a "2-bolt" style hanger that mounts from the inside of the dropout. Because it is machined to much tighter tolerances than standard cast parts, it is a favorite for mechanics looking to restore "factory-fresh" indexing to carbon and alloy frames that have suffered from minor shifting inconsistencies.

Key Features

• CNC Machined 6061-T6 Aluminum: Significantly stiffer than original cast hangers, which is crucial for maintaining precise alignment on modern high-speed drivetrains.

• Corrosion-Resistant Black Anodised Finish: Unlike painted hangers, the anodised surface won't chip or flake, keeping your dropout area looking clean and professional.

• Dual-Bolt Inside Mount: Attaches to the frame using two M4x8 Flat Head Screws (included), ensuring the hanger remains perfectly seated and cannot pivot.

• Superior Alignment: Machined to exact workshop tolerances, ensuring your derailleur sits perfectly parallel to your cassette cogs for optimal chain line.

• Made in the USA: Produced in Wheels Manufacturing’s Colorado facility to professional-grade standards.

Technical Specifications