Birzman Internal Routing Kit

The Internal Cable Routing Kit takes the guesswork out of cable routing by helping guide housings, cables and Di2 electric wires through the frame, with its built-in magnet and interchangeable adapters. The compact kit contains four individual steel adapters, a lead wire for easier movement inside the frame, and a flexible magnet extension used to retrieve an adapter from the exit port.

• Ø4 & Ø5mm housings
• Ø5mm hydraulic hoses
• Shimano® Di2 wires
• Ø1.2 & Ø1.5mm cables

Compatible with aluminium, carbon fiber and titanium bicycle frames. Please trim off damaged / frayed cable ends or uneven housing ends to allow secure attachment with the adapter. Once the adapter is removed from a hydraulic hose, please cut 10mm off the end to ensure engagement with the brass insert.

Key Features

• Magnetic Routing System: Simplifies internal cable installation

• Interchangeable Adapters: Supports multiple cable and hose types

• Flexible Magnetic Extension: Helps retrieve lead wire from frame exit ports

• Universal Compatibility: Works with mechanical and electronic wiring systems

• Lead Wire Included: Allows smooth movement inside frame tubes

• Compact Tool Kit: Easy to carry and store in workshop tools

• Professional Precision: Ideal for modern internally routed frames

Product Specifications

• Brand: Birzman

• Product Type: Internal Cable Routing Tool Kit

• Compatible Housing Size: Ø4 mm / Ø5 mm

• Hydraulic Hose Compatibility: Ø5 mm

• Cable Compatibility: Ø1.2 mm / Ø1.5 mm

• Electronic Wire Compatibility: Shimano Di2 wires

• Adapter Type: Magnetic interchangeable adapters

• Extension Type: Flexible magnetic extension

• Use: Internal cable routing for bicycle frames

• Compatible Bike Type: Road Bike, MTB, Gravel Bike, Hybrid Bike, E-Bike

Routing Precision System

The kit includes multiple steel adapters designed to match different cable and housing sizes, ensuring accurate guidance through internal frame channels. The strong magnetic connection allows precise control when routing cables through complex frame paths. This improves installation speed and prevents cable damage during setup.

Easy Operation / Usage

• Attach the appropriate adapter to the lead wire

• Insert lead wire into frame entry port

• Use magnetic extension to guide cable through frame

• Retrieve adapter from exit port using magnet

• Attach cable or hose and pull smoothly through frame

Why Choose This Product

• Makes internal cable routing faster and easier

• Reduces installation difficulty in modern frames

• Compatible with mechanical and electronic systems

• Magnetic system improves routing accuracy

• Compact and professional-grade tool kit

• Trusted Birzman engineering quality

In the Box

• Magnetic routing tool body

• Interchangeable steel adapters

• Lead wire

• Flexible magnetic extension