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Union GH-303 derailleur hanger

12.49 €

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Features of Union GH-303

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Specifications Union GH-303

Features of Union GH-303

Color Silver

Color

Silver

Product Type Toecaps

Product Type

Toecaps

Product description of Union GH-303 derailleur hanger

Description summary

Don´t let a bent hanger ruin your ride! The UNION GH-303 derailleur hanger is the essential spare part to protect your bike and restore peak transmission performance. Engineered as a crucial safeguard, it absorbs impacts to save your expensive frame from catastrophic damage. This precision part guarantees perfect derailleur alignment for crisp, immediate, and reliable shifting, eliminating frustrating chain drops and noise. Crafted to meet OEM specs for a perfect fit, it includes all necessary screws for a quick, hassle-free installation

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UNION GH-303 Derailleur Hanger | Precision Spare Part for Transmission

Restore your bicycle´s shifting performance and protect your frame with the UNION GH-303 derailleur hanger. A bent or broken derailleur hanger can instantly ruin a ride, leading to poor gear changes, chain drops, and potentially catastrophic damage to your bike´s frame and rear derailleur. This precision-engineered spare part is the essential component you need to get back on the road or trail with confidence, ensuring your transmission system functions exactly as it was designed to. The GH-303 is not just a replacement part; it´s an investment in the longevity and performance of your entire drivetrain.

Restore Your Ride´s Performance

The primary benefit of the UNION GH-303 is its role as a crucial safeguard for your bicycle. It is meticulously designed to be a sacrificial component, meaning it will absorb the force of an impact from a crash or trail-side debris, bending or breaking to protect your much more expensive and integral bike frame. Replacing a small, affordable hanger is vastly preferable to repairing or replacing a damaged frame. Furthermore, a perfectly straight hanger is the foundation of crisp, reliable shifting. The GH-303 ensures perfect alignment for your rear derailleur, allowing for immediate and accurate gear changes every time you press the shifter. Eliminate frustrating ghost-shifting, chain noise, and hesitation by installing this high-quality replacement.

Engineered for Excellence

The UNION GH-303 stands out due to its superior manufacturing and design. It is crafted to meet or exceed original equipment manufacturer (OEM) specifications, guaranteeing a perfect fit for compatible frames. This eliminates any guesswork during installation, allowing for a quick and hassle-free repair. Each hanger is built for durability to withstand the normal rigors of shifting and riding, while still performing its essential protective function when needed. This part arrives as a complete solution in a convenient self-service package, which includes the necessary mounting screws, so you have everything required to complete the job without needing to source additional hardware.

Toecaps

This component acts as the ultimate safeguard for your frame´s dropout, absorbing impacts that would otherwise cause catastrophic and expensive damage. Think of it as a protective cap for the most vulnerable point of your transmission system, ensuring the integrity of your frame remains intact even after an unfortunate incident.

Technical Specifications

Brand:- UNION.

Product name:- GH-303 derailleur hanger.

Model:- GH-303

Category:- Spare Parts

Subcategory:- Transmission

Package Contents:- Convenient self-service package containing one (1) GH-303 derailleur hanger and all necessary mounting screws for a complete installation.

Specifications:
-UNION derailleur hanger self-service package, incl.

screws

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What our customers are saying about Union GH-303 derailleur hanger

Union GH-303 derailleur hanger

2025/11/27

Krisztián

Nehezen beszerezhető,máshol nagyon drága.Erős, masszív darab.Mit írhatnék még róla?

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Union GH-303 derailleur hanger

Compatibility Cannondale Topstone 3 2019

2025/06/12

Simone

Is this compatible with the 2019 Cannondale Topstone 3 frame?

Answer of Pablo Enrique

Yes, with the aluminum frame yes.

Union GH-303 derailleur hanger

GH-303 pin

2025/01/26

Silvia

I need to know if it is compatible with a Cannondale Topstone Carbon Apex frame

Answer of Bastien

I took the same one for my 2023 Cannondale Topstone aluminum (GRX group). Not yet mounted but identical model.

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