Wheels Manufacturing Dropout 19
Dropout 19
Dropout 19
Wheels Manufacturing

Wheels Manufacturing Dropout 19

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Direct-replacement derailleur hanger for Cannondale frames (#19). CNC-machined 6061-T6 aluminium for an exact, lightweight and durable fit—ideal as a spare or repair part.

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Product Details

Overview & Technology

Dropout 19 from Wheels Manufacturing is a precision replacement derailleur hanger engineered to restore OEM alignment and protection to Cannondale frames that use the #19 style dropout. CNC-machined from 6061-T6 aluminium, this hanger gives you a true, repeatable fit that resists bending and corrosion while remaining light—shipping weight is just 0.05 lb. The single-sided design replicates the original Cannondale geometry to maintain shifting accuracy and rear derailleur alignment. Because it's manufactured to tight tolerances and finished with a corrosion-resistant surface, Dropout 19 is ready for everyday road use and quick field repairs.

Key Features & Benefits

Purpose-built construction: CNC-machined 6061-T6 aluminium provides the stiffness needed to keep shifting crisp while absorbing impact loads that would otherwise damage the frame or derailleur. Real-world benefits: a lightweight replacement that restores OEM alignment, protects the derailleur in a crash, and avoids the cost and downtime of frame repair. The compact footprint and accurate bolt hole spacing ensure an easy swap with your existing hardware on compatible Cannondale frames.

Fit, Compatibility & Installation

Dropout 19 is a direct replacement for Cannondale #19 hangers (manufacturer part DROPOUT-19, Wheels Manufacturing product number 270387). This is a single-sided hanger designed to match the original dropout geometry. Check your frame's hanger shape or compare to the #19 reference image in our compatibility guides. Installation is straightforward: the hanger typically uses the frame's existing mounting bolt or fasteners. Use the correct size hex/torque tool and tighten to the frame manufacturer's torque spec. We recommend checking derailleur alignment after installation and making fine adjustments with a hanger alignment tool if needed.

Who This Hanger Is For

Ideal for Cannondale road riders, mechanics, and touring cyclists who want a reliable, OEM-fit replacement or a lightweight spare to carry on long rides. If you've bent or broken your original hanger in a crash or while trail-siding, Dropout 19 restores proper shifting without the expense of frame repair. Also useful for shops and home mechanics stocking common replacement parts—compact, affordable, and built to the precision standards shops expect from Wheels Manufacturing.

Key Features

  • ✓ CNC-machined 6061-T6 aluminum for precise OEM-style fit and strength
  • ✓ Direct replacement for Cannondale #19 derailleur hanger geometry
  • ✓ Single-sided design maintains factory derailleur alignment
  • ✓ Corrosion-resistant finish for long-term durability in all conditions
  • ✓ Ultra-light: shipping weight approximately 0.05 lb—compact spare
  • ✓ Easy swap uses existing frame fastener; ideal as on-bike spare

Specifications

Misc #19, Cannondale

Product Identifiers

Vendor Item # DROPOUT-19
UPC 836572002711

Frequently Asked Questions

How do I know if Dropout 19 fits my Cannondale frame?

Compare your frame's hanger shape to the Wheels Manufacturing #19 reference or check the frame's parts list for a "#19" hanger. If your OEM hanger matches the Dropout 19 profile and mounting hole pattern, this is the correct replacement. When in doubt, send a photo of your dropout to a mechanic or our support team for confirmation.

Does the hanger come with mounting hardware?

Dropout 19 is sold as the hanger only; it typically uses the frame's original mounting bolt or fasteners. If your hardware is damaged or missing, source the correct-length bolt and thread engagement recommended by Cannondale or your local bike shop.

Can I bend a damaged hanger back into true, or should I replace it?

Minor bends can sometimes be corrected with a proper hanger alignment tool, but repeated bending weakens aluminium. For reliability and safety—especially after a crash—we recommend replacing bent or creased hangers with a new Dropout 19 to ensure accurate shifting and to protect the derailleur and frame.

What tools do I need to install this hanger?

Basic hand tools—hex keys or Allen wrenches matching your frame's mounting bolt—are usually sufficient. A torque wrench set to the manufacturer's spec is recommended. After installation, verify derailleur indexing and, if possible, check alignment with a hanger alignment gauge.

Is this an OEM part or an aftermarket replacement?

Wheels Manufacturing makes high-quality aftermarket replacement hangers that match or exceed OEM tolerances. Dropout 19 is manufactured to replicate the Cannondale #19 geometry so it functions as a direct-fit replacement for the original part.

How durable is the Finish and material?

The hanger is CNC-machined from 6061-T6 aluminium—a common, durable alloy used in bike components—and finished to resist corrosion. This construction balances strength, weight, and longevity for road use and routine exposure to the elements.

Buying Guide

When buying a replacement derailleur hanger, match the hanger number or silhouette to your frame—manufacturers vary widely in shape and bolt spacing. Prioritize CNC-machined aluminium hangers like Dropout 19 for accurate fit and dependable strength while keeping weight low. Carry a spare hanger on long rides or add one to your workshop kit; hangers are inexpensive but critical parts that save you from derailleur or frame damage and keep you rolling after a tip-over or crash.

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