Wheels Manufacturing Dropout 58
Dropout 58
Dropout 58
Wheels Manufacturing

Wheels Manufacturing Dropout 58

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Wheels Manufacturing Dropout 58 is an OEM-style replacement derailleur hanger for DeRosa, Fondriest, Marin and Orbea frames. CNC-machined 6061-T6 aluminum with a corrosion-resistant finish for accurate shifting and easy installation.

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Product Details

Overview & Technology

Wheels Manufacturing Dropout 58 (Part #DROPOUT-58, Product #270399) is a direct-fit replacement derailleur hanger made to match the factory orientation and mounting points found on select road frames. Designed and manufactured by Wheels Manufacturing, Dropout 58 restores derailleur alignment after damage or replacement, bringing back smooth, reliable shifting. The hanger is CNC-machined from 6061-T6 aluminium and finished with a hard-anodized coating to resist corrosion and scuffing. Its precise tolerances and reinforced mounting area help maintain derailleur position under load, improving chain engagement and extending drivetrain life.

Key Features

Precision construction: CNC-machined from 6061-T6 aluminium for consistent fit and durable strength without adding unnecessary weight. OEM fit & finish: Replaces factory dropout hangers on DeRosa, Fondriest, Ironhorse, Marin and Orbea frames to restore original derailleur geometry. The part includes the exact mounting pattern and axle clearance to keep shifting crisp and predictable.

Fit & Compatibility

Dropout 58 is listed as a multiple-maker hanger and is specifically compatible with several road frames including DeRosa and Fondriest models, plus select Ironhorse, Marin and Orbea frames. Verify compatibility by matching your existing hanger shape and mounting bolt location or by checking Wheels Manufacturing's hanger catalog for your frame model. Because derailleur hangers are frame-specific, we recommend comparing the physical dimensions and mounting hole spacing of your damaged hanger to the Dropout 58. The part ships compact (1" x 0.5" x 0.5") and weighs approximately 0.05 lb, making it an easy carry spare for long rides or team mechanics.

Who This Hanger Is For

This hanger is aimed at road cyclists, mechanics and shop techs who own or service DeRosa, Fondriest, Ironhorse, Marin or Orbea bikes requiring an exact OEM-style replacement. It's ideal for riders who need a reliable, lightweight part that restores precise shifting after a crash or bent hanger incident. Gravel riders running road-specific frames and riders who value on-trail/serviceability will appreciate the Dropout 58’s accurate alignment and durable anodized finish. Keep one in your toolbox or travel pack for quick roadside repairs.

Key Features

  • ✓ CNC-machined 6061-T6 aluminum body for durable, consistent strength
  • ✓ Hard-anodized finish resists corrosion and road wear
  • ✓ Direct-fit replacement for DeRosa, Fondriest, Ironhorse, Marin, Orbea
  • ✓ Exact mounting pattern restores OEM derailleur geometry and alignment
  • ✓ Lightweight 0.05 lb design ideal as a carry-along spare
  • ✓ Easy to install with common 5 mm or 6 mm hex/allen tools
  • ✓ Precision tolerance reduces chain rub and improves shifting accuracy

Specifications

Misc #58, Multiple Makers

Product Identifiers

Vendor Item # DROPOUT-58
UPC 836572005316

Frequently Asked Questions

How do I know if Dropout 58 fits my frame?

Compare the shape and mounting hole spacing of your current hanger to the Dropout 58 or consult Wheels Manufacturing's online hanger lookup. If your frame is listed (DeRosa, Fondriest, Ironhorse, Marin, Orbea) this part is a direct-fit OEM replacement.

What material is the hanger made from?

The Dropout 58 is CNC-machined from 6061-T6 aluminium with a hard-anodized finish, offering a balance of light weight and strength while resisting corrosion.

Can I install this hanger at home?

Yes. Installation typically requires basic tools (hex keys and a torque wrench). Remove the wheel and derailleur if necessary, bolt the new hanger to the frame, reinstall the derailleur and fine-tune indexing. If unsure, a local shop can fit and align the hanger quickly.

Will this hanger fix shifting problems?

If shifting issues are caused by a bent or damaged hanger, replacing it with Dropout 58 will usually restore correct derailleur geometry and fix indexing problems. If problems persist, inspect the derailleur, cable/housing and cassette for wear or damage.

Is the hanger sold with hardware or bolts?

Hardware inclusion varies; often the hanger is sold alone. Check the product bundle details on the page. If bolts are not included, reuse your original mounting bolt or purchase the correct replacement bolt from Forest Bikes.

Should I carry a spare hanger on rides?

Yes — derailleur hangers are designed to fail to protect the frame and derailleur. Carrying a spare Dropout 58 (if it fits your bike) and a small tool kit can turn a race- or ride-ending crash into a quick roadside repair.

Buying Guide

When replacing a derailleur hanger, accuracy matters more than brand. Match the hanger shape, bolt pattern and orientation to your frame — even small differences shift geometry and indexing. Prioritize CNC-machined hangers from reputable manufacturers (like Wheels Manufacturing) for consistent tolerances and long-term reliability. Decide whether you want a lightweight aluminum hanger or a steel option: aluminium saves grams and is common on road bikes, while steel offers extra toughness at the cost of weight. Finally, consider keeping a spare hanger and the correct mounting bolt in your tool kit to turn mishaps into minor inconveniences.

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