Specialized Electronic Shift ICR Cable Port Plug Grommet OEM

Specialized ICR Electronic Drivetrain Port Plug

Factory OEM | Press-Fit Rubber Grommet | Electronic Shifting | S179900015

The Specialized Factory Replacement Internal Cable Routing (ICR) Electronic Drivetrain Port Plug is a genuine OEM rubber grommet designed to seal unused internal cable-routing ports on compatible Specialized frames.

When a bike is equipped with an electronic shifting drivetrain, mechanical derailleur cable housing may no longer be required. This press-fit plug closes the unused front or rear derailleur routing port, providing a clean factory appearance while helping prevent water, dirt, and debris from entering the frame.

Its straight-head profile sits neatly against the frame and features a molded Specialized “S” logo for a factory-correct finish.

Available from Stage 21 Bikes, your trusted source for genuine Specialized components, replacement parts, and performance accessories.

Key Features

• Genuine Specialized factory OEM replacement part
• Seals unused Internal Cable Routing (ICR) ports
• Designed for electronic shifting configurations
• Suitable for unused front or rear derailleur cable ports
• Straight-head profile provides a clean, flush appearance
• Helps protect the frame interior from water, dirt, and debris
• Flexible rubber construction
• Molded Specialized “S” logo
• Simple press-fit installation
• No installation tools required

Specifications

Compatibility

Designed to plug compatible unused Specialized internal cable-routing ports for:

• Front derailleur cable routing
• Rear derailleur cable routing
• Frames designed for or converted to electronic shifting

Suitable for compatible electronic drivetrain configurations including:

• Shimano Di2
• SRAM eTap
• SRAM AXS

Installation

Installation is quick and tool-free:

1. Remove any existing cable housing or grommet from the unused ICR port.
2. Make sure the opening is clean and free of dirt or debris.
3. Align the grommet with the frame opening.
4. Press firmly into place until the flange sits flush against the frame.

Compatibility Notes

• Intended for unused cable-routing ports on compatible Specialized frames.
• Not designed to route or support mechanical shift housing.
• Verify the frame's port dimensions before ordering.
• The grommet body measures 7mm OD, with a 10mm OD upper flange and 8.5mm overall length.
• Electronic drivetrain compatibility does not by itself guarantee frame compatibility; the frame must use the corresponding Specialized ICR port dimensions.

Factory-Correct Finishing Detail

When converting a compatible Specialized frame from mechanical to electronic shifting—or replacing a missing factory plug—leaving an unused cable port open can allow contaminants into the frame and creates an unfinished appearance.

Genuine Specialized S179900015 provides a simple OEM solution, sealing the unused opening while restoring the clean, factory-correct appearance of the frame.