Product Description

Ultra-Light Direct-Mount Upgrade for FACTOR Road Bikes

Upgrade your compatible FACTOR road bike with the Chaser ultra-light direct-mount rear derailleur hanger.

Precision CNC-machined from high-strength ALU7075-T6 aluminum, this hanger weighs only approximately 17.2g including the side cover, compared with approximately 38.4g for the original part. This provides a weight saving of approximately 21.2g, or around 55%.

The direct-mount design is made specifically for compatible Shimano R-series road rear derailleurs. It creates a clean, performance-focused installation while reducing unnecessary weight around the rear dropout.

Designed for selected FACTOR O2 VAM, Ostro VAM, Gravel and Hanzo Disc frames using the FCTRD1TH hanger standard.

Key Features

• Designed for selected FACTOR road and gravel frames
• FCTRD1TH direct-mount derailleur hanger
• Compatible with suitable Shimano R-series rear derailleurs
• Precision CNC-machined from ALU7075-T6 aluminum
• Approximately 17.2g including the side cover
• Approximately 21.2g lighter than the 38.4g original hanger
• Approximately 55% weight reduction
• High-strength lightweight construction
• Non-threaded hanger design
• Multiple anodized color options
• Clean direct-mount appearance

Compatibility

FCTRD1TH Version

Compatible with the following FACTOR frames:

2020

• FACTOR O2 VAM
• FACTOR Ostro VAM
• FACTOR Slick Disc

2021

• FACTOR O2 VAM
• FACTOR Ostro VAM
• FACTOR Slick Disc

2022

• FACTOR O2 VAM
• FACTOR Ostro VAM
• FACTOR Gravel
• FACTOR Hanzo Disc

2023

• FACTOR O2 VAM
• FACTOR Ostro VAM
• FACTOR Gravel
• FACTOR Hanzo Disc

2024

• FACTOR O2 VAM
• FACTOR Ostro VAM
• FACTOR Gravel
• FACTOR Hanzo Disc

2025

• FACTOR O2 VAM
• FACTOR Ostro VAM
• FACTOR Gravel
• FACTOR Hanzo Disc

Important Information for 2026 Models

The following 2026 FACTOR models use the UDHR D1TH hanger standard:

• FACTOR MONZA
• FACTOR ONE

The FCTRD1TH version listed on this page is not compatible with frames requiring the UDHR D1TH standard.

Please confirm your frame model, production year and original derailleur hanger type before ordering.

Rear Derailleur Compatibility

Compatible with:

• Suitable Shimano R-series road rear derailleurs
• Shimano direct-mount rear derailleurs with the extended mounting link shown in the product images

Not compatible with:

• SRAM rear derailleurs
• Campagnolo rear derailleurs
• Older Shimano rear derailleurs without the required direct-mount interface
• Rear derailleurs that do not match the mounting shape shown in the product images

How to Identify a Compatible Rear Derailleur

A compatible Shimano direct-mount rear derailleur has an extended mounting link between the rear derailleur body and the derailleur hanger.

Before ordering, compare your rear derailleur and original hanger with the compatibility images shown on this page.

If you are unsure, please send us:

• Bike model
• Frame production year
• Rear derailleur model
• Clear photo of the original derailleur hanger
• Clear photo of the rear derailleur mounting area

We will help confirm compatibility before purchase.

Specifications

• Brand: Chaser Sports
• Product Type: Direct-Mount Rear Derailleur Hanger
• Hanger Standard: FCTRD1TH
• Material: ALU7075-T6 Aluminum Alloy
• Manufacturing Process: Full CNC Machining
• Weight: Approximately 17.2g including side cover
• Original Hanger Weight: Approximately 38.4g
• Weight Saving: Approximately 21.2g
• Installation Torque: 1Nm
• Thread Design: Non-threaded
• Compatible Frame Brand: FACTOR
• Compatible Rear Derailleur: Suitable Shimano R-Series Direct-Mount Models
• Colors: Pink, Red, Green, Silver, Black, Purple, Gold, Cyan and Blue

Package Includes

• 1 × Chaser FCTRD1TH Direct-Mount Derailleur Hanger
• 1 × Matching Side Cover

Fixing screws are not included unless specifically shown or stated in the selected product option.

Installation Notes

• Professional installation is recommended.
• Maximum recommended installation torque is 1Nm.
• Do not overtighten the hanger or side cover.
• Confirm the original hanger standard before installation.
• Compare the new hanger with the original part before fitting.
• Stop installation immediately if the shape or mounting interface does not match.
• Never force the hanger into the frame.
• Check rear derailleur alignment and shifting after installation.
• Rear derailleur adjustment may be required after replacing the hanger.

Compatibility Check: Due to the complexity of original equipment manufacturer (OEM) parts' models and batches, there may be instances where this product is incompatible.

Upon receiving this product, please compare it with the OEM specifications to ensure compatibility before installation.

Torque Specifications: Install this product strictly according to the torque values specified in the OEM parts manual.Installation Issues: If you encounter any discrepancies with the OEM specifications or face difficulties at the initial stage of installation, stop immediately and contact customer service for assistance with returns or exchanges.

No Forced Installation: Do not force installation under any circumstances.Liability: Any damages resulting from forced installation or unauthorized modifications of this product (or its components) will be the sole responsibility of the buyer.

All products are photographed to accurately represent the colors you will see upon receipt.

Due to differences in lighting, angles, or screen settings, slight color variations may occur.

The actual product should be considered the standard.For "colored" and "blue" products, the coloring process may result in uneven color distribution, making each product unique.