HOTCHECK S-Grade Titanium Shimano UDH Derailleur Hanger & Pivot Bolt Complete Kit

Engineering Beyond Convention.

5-Axis CNC Machining. Integrated Di2 Cable Routing. One Complete Titanium Assembly.

Exceptional engineering is defined not only by what a component does, but by the thought, precision and craftsmanship invested in its creation.

The HOTCHECK S-Grade Titanium Shimano UDH Derailleur Hanger & Pivot Bolt Complete Kit represents this philosophy at its most ambitious.

Far more than a replacement derailleur hanger, this complete assembly brings together HOTCHECK's intricately machined titanium UDH hanger, matching titanium mounting hardware and a dedicated Shimano derailleur pivot bolt.

Manufactured from HOTCHECK S-Grade Titanium Alloy, with material originating from BAOTI Group and sourced through specialist suppliers in Baoji, China, every component reflects an uncompromising approach to engineering, materials and finishing.

At the heart of the design is a sophisticated 5-axis CNC-machined titanium hanger, featuring integrated Shimano Di2 cable routing.

Unlike conventional hanger designs, the precision-machined cable-routing passage forms part of the hanger's geometry, allowing the Di2 wire to pass through the component itself.

Achieving this intricate feature demands a more advanced manufacturing approach. HOTCHECK specifically employs 5-axis CNC machining because the routing geometry cannot be produced using conventional 3-axis machining alone.

Every machined surface, carefully defined edge and sculpted recess reflects a deliberate balance between mechanical functionality, dimensional precision and visual refinement.

With manufacturer-stated tolerances as tight as ±0.01 mm for assembly-critical features, HOTCHECK's commitment to precision extends far beyond what is immediately visible.

Weighing approximately 39 g for the complete assembly, this is titanium engineering developed for riders who recognise that exceptional craftsmanship belongs in every component of a performance bicycle.

Performance is the baseline. Aesthetics is the obsession.

Three Components. One Complete Titanium Assembly.

01 — S-Grade Titanium Shimano UDH Derailleur Hanger

The centrepiece of the assembly.

Produced using 5-axis CNC machining, the hanger features HOTCHECK's distinctive sculpted geometry, intricate surface detailing and integrated Shimano Di2 cable routing.

Manufacturer-stated weight: 27 g

02 — Titanium UDH Fixing Bolt & Washer

Matching precision-machined titanium mounting hardware, developed around the original SRAM Universal Derailleur Hanger specification.

The distinctive fixing bolt and washer complete the mounting interface while maintaining a coordinated titanium finish.

Combined weight: 9.9 g

03 — Titanium Shimano Derailleur Pivot Bolt

A dedicated titanium pivot bolt designed for compatible Shimano R8xxx and R9xxx series rear derailleurs.

Intricately machined from HOTCHECK S-Grade Titanium Alloy, providing the finishing detail to the complete hanger assembly.

Weight: 1.95 g

Complete Assembly Weight: Approximately 39 g

Engineering Highlights

• Complete Titanium Assembly — Includes the Shimano UDH derailleur hanger, matching fixing bolt and washer, and titanium Shimano derailleur pivot bolt.

• 5-Axis CNC Machining — Advanced multi-axis manufacturing enables complex geometry and integrated Di2 cable routing.

• Integrated Di2 Cable Routing — A dedicated passage within the hanger provides a considered route for the Shimano Di2 wire.

• HOTCHECK S-Grade Titanium Alloy — High-strength titanium material originating from BAOTI Group, sourced through specialist suppliers in Baoji, China.

• Exacting Manufacturing Standards — HOTCHECK specifies tolerances as tight as ±0.01 mm for assembly-critical features, with careful management of cumulative dimensional variation.

• Distinctive Sculpted Geometry — Intricate machining and carefully defined surfaces reflect the relationship between mechanical performance and visual refinement.

• Precision-Machined Titanium Hardware — Matching components maintain a cohesive engineering aesthetic throughout the assembly.

• Approximately 39 g Complete — Lightweight construction across the entire hanger and mounting assembly.

Technical Specifications

Weights are manufacturer-stated and may vary slightly between individual components.

Compatibility & Fitment

Shimano Derailleur Compatibility

The supplied titanium derailleur pivot bolt is confirmed by HOTCHECK for:

• Shimano R9xxx series rear derailleurs

• Shimano R8xxx series rear derailleurs

***Not compatible with Shimano R7xxx series rear derailleurs.***

Frame Compatibility

Designed for compatible frames using the SRAM Universal Derailleur Hanger (UDH) mounting standard.

The frame must have a compatible UDH mounting interface. Please verify the rear thru-axle and frame specifications before installation.

Important: Compatibility of the hanger with a UDH frame does not automatically guarantee compatibility of the supplied pivot bolt with every Shimano rear derailleur.

What's Included

• 1 × HOTCHECK S-Grade Titanium Shimano UDH Derailleur Hanger

• 1 × HOTCHECK Titanium UDH Fixing Bolt

• 1 × HOTCHECK Titanium UDH Washer

• 1 × HOTCHECK Titanium Shimano Derailleur Pivot Bolt

All components are included. Complete assembly weight: approximately 39 g.

Precision Without Compromise.

The most exceptional components are those where engineering, design and manufacturing exist in complete harmony.

From the advanced machining required for its integrated Di2 cable-routing passage to the meticulously refined titanium surfaces, every detail of the HOTCHECK Shimano UDH hanger reflects a singular pursuit of excellence.

Not simply designed to function. Engineered to be exceptional.

HOTCHECK — Titanium Modding Masters.