Wheels Manufacturing Dropout 284

$40.50

In Stock

Direct-replacement derailleur hanger for Specialized frames. CNC-machined 6061-T6 aluminum with anodized finish for precision shifting and corrosion resistance.

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Product Details

Overview & Technology

Dropout 284 from Wheels Manufacturing is a precision replacement derailleur hanger designed specifically to match Specialized frame dropouts that require the DROPOUT-284 profile. Manufactured to tight tolerances, this hanger restores correct derailleur alignment after damage or loss and ensures consistent indexing and reliable shifting performance. The hanger is CNC-machined from 6061-T6 aluminum and finished with a hard anodize for corrosion resistance and long-term durability. It ships in a compact package (3" x 1.2" x 0.3", 0.1 lb), and is labeled with Wheels Manufacturing part number DROPOUT-284 for exact identification and compatibility checks.

Key Features & Benefits

Precision CNC machining delivers accurate derailleur placement so your drivetrain shifts cleanly and consistently. The 6061-T6 aluminum construction balances low weight with high strength, absorbing impact loads that might otherwise bend or damage a frame-mounted dropout. Practical benefits: • Restores correct hanger alignment after crashes or drops • Hard-anodized finish resists road salt, mud, and corrosion • Lightweight and affordable spare for road riders and mechanics

Fit, Compatibility & Installation

This hanger is a direct replacement for Specialized frames that specify the Wheels Manufacturing DROPOUT-284 profile. It installs using the original frame mounting point and, in most cases, original hardware — verify that your frame's mounting boss matches the hanger profile before ordering. Installation is straightforward: remove the broken hanger, align the new hanger to the dropout boss, and torque the mounting bolt to the frame manufacturer's specification. If your frame used a replaceable hanger with integrated bolt, keep the existing bolt unless it is damaged; some bikes may require a small threadlocker on the mounting screw for secure fit.

Who It's For

This Dropout 284 hanger is ideal for road cyclists, bike mechanics, and riders who want an OEM-fit replacement for a Specialized frame. It's a sensible spare for anyone who travels with their bike or who frequently rides in dense pack or mixed-surface conditions where hangers are at risk. Shop this hanger if you want a durable, precision-made replacement that restores factory shifting geometry without the need for aftermarket adapters or alignment compromises.

Key Features

✓ CNC-machined 6061-T6 aluminum for strength and precise derailleur placement
✓ Hard anodized finish resists corrosion from road salt and mud
✓ Direct replacement for Specialized frames using DROPOUT-284 profile
✓ Lightweight 0.1 lb design keeps overall bike weight low
✓ Easy bolt-on installation with original mounting boss and hardware
✓ Restores factory shifting geometry after impacts or hanger damage
✓ Clearly labeled with Wheels Manufacturing part number DROPOUT-284

Specifications

Misc	Specialized

Product Identifiers

Vendor Item #	DROPOUT-284
UPC	811079022929

Frequently Asked Questions

How do I know if Dropout 284 fits my Specialized frame?

Check your bike's existing hanger for the Wheels Manufacturing part number or compare the hanger profile to photos and fit guides. If your original hanger or frame documentation lists DROPOUT-284 or part number DROPOUT-284, this is the correct replacement. When in doubt, remove the broken hanger and match it visually or bring it to a shop.

What material is the hanger made from and why does that matter?

This hanger is CNC-machined from 6061-T6 aluminum and finished with hard anodize. 6061-T6 provides an ideal balance of light weight and toughness, while anodizing improves corrosion resistance and surface durability — important for reliable shifting and longevity in wet or salty conditions.

Does it include the mounting bolt or hardware?

Most customers reuse the original mounting bolt from the frame; Wheels Manufacturing hangers are typically sold as the hanger only. If your mounting bolt is damaged or missing, pick up a replacement bolt sized to your frame's specification or ask a mechanic to confirm thread and length before installation.

Can I straighten a bent hanger instead of replacing it?

Minor bends can sometimes be carefully straightened with a derailleur hanger alignment tool, but repeated straightening weakens the part and can leave it more likely to fail. For road reliability and precise shifting, we recommend replacing a bent or cracked hanger with a new Dropout 284.

Will installing a new hanger fix shifting problems?

If shifting issues are caused by a misaligned or damaged hanger, installing this precise replacement will restore derailleur geometry and usually eliminate related shifting problems. However, persistent issues could also stem from cable stretch, worn cables/housing, or a misadjusted derailleur — check those items if problems remain.

Do I need a torque wrench to install it?

It's best practice to install the hanger to the frame manufacturer's torque specification using a torque wrench to avoid over-tightening and potential frame damage. If you don't have a torque wrench, have a shop install it to ensure correct clamping force.

Buying Guide

When buying a replacement derailleur hanger, first confirm the hanger profile and part number your frame requires — compatibility is specific and not universal. Prefer CNC-machined aluminum hangers with a corrosion-resistant finish for the best balance of strength, weight and longevity. Keep a spare hanger on hand if you ride frequently, commute, or travel with your bike. Hangers are sacrificial parts designed to protect your frame; replacing a damaged hanger is far cheaper and faster than repairing a frame or replacing a derailleur.

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