CHASER Ultralight UDH Rear Derailleur Hanger for Shimano 25.8g, SRAM & Campagnolo 21.5g

The CHASER Ultralight UDH Rear Derailleur Hanger is precision CNC-machined from 7075-T6 aluminum alloy for lightweight performance, strength, and reliable shifting.

Designed for UDH disc-brake frames, it is suitable for compatible road and gravel bikes, including Trek Madone Gen 8, X-LAB RT, Van Rysel RCR, and similar UDH-equipped frames.

Choose the correct version according to your rear derailleur system.

Key Features

• Precision CNC-machined from 7075-T6 aluminum alloy
• Lightweight, high-strength, and durable
• Designed for UDH disc-brake frame systems
• Available in Universal, Shimano Direct-Mount, and Aero Direct-Mount versions
• Hollowed-out structure reduces weight while maintaining rigidity
• Optional chain-retention guard design
• Available in multiple anodized colors
• Installation torque: 25 Nm

Compatibility

Universal Version – UDHRD2TH / UDHRD2THA
Compatible with SRAM, Campagnolo, and similar rear derailleurs.

Shimano Direct-Mount Version – UDHRD1TH
Compatible with Shimano R-Series direct-mount rear derailleurs with an extended mounting link.

Shimano Direct-Mount Aero Version – UDHRD1THA
Aerodynamic direct-mount version for compatible Shimano R-Series rear derailleurs.

Important Notes

• For Shimano direct-mount rear derailleurs, please confirm that your derailleur has an extended mounting link before ordering.
• For SRAM, Campagnolo, older Shimano rear derailleurs, and other compatible systems, please select the Universal Version.
• Please confirm your bicycle frame uses the UDH hanger standard before ordering.
• If purchasing a replacement outer nut, select the 1.5 mm thread-pitch version only for compatible 1.5 mm thread-pitch thru-axles. Please leave the desired color in your order note.
• After installation, readjust shifting according to the rear derailleur manufacturer’s service instructions.

Specifications

Brand: CHASER
Product Type: UDH Rear Derailleur Hanger
Material: 7075-T6 Aluminum Alloy
Manufacturing Process: Full CNC Machining
Frame Compatibility: UDH Disc-Brake Frames
Installation Torque: 25 Nm
Available Colors: Pink, Red, Green, Blue, Silver, Black, Purple, Gold, Cyan

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.