Carbon Frame Di2 Cable Plug Rubber Brake Line Stop – 2pcs

Keep your carbon frame bicycle looking clean and performing flawlessly with this Di2 Cable Plug & Rubber Brake Line Stop. Designed specifically for carbon and alloy bicycle frames, these compact rubber plugs neatly seal cable routing holes, prevent unwanted rattling, and protect your frame's finish from scratches and moisture ingress — all in a lightweight, low-profile design.

Whether you're building a fresh road bike, refreshing a gravel rig, or tidying up a Di2 electronic shifting setup, these plugs are the finishing touch every detail-focused cyclist needs.

Key Features

• Universal Fit: Compatible with most carbon and alloy bicycle frames featuring standard cable routing ports
• Di2 Ready: Perfectly sized to accommodate Shimano Di2 electronic shifting cable ports
• Durable Rubber Construction: Flexible, weather-resistant rubber/plastic material for a secure, snug fit that stays put on the road or trail
• Frame Protection: Seals open cable ports to guard against moisture, dust, and debris entering the frame
• Clean Aesthetics: Gives your build a neat, professional finish by covering unused cable holes
• Two Color Options: Available in Color A and Color B to match your frame's color scheme
• Compact & Lightweight: Measures just 3 × 1.5 cm (1.18 × 0.59 in) — negligible weight addition
• Value Pack: Comes as a set of 2 pieces per package

Product Specifications

What's in the Box?

• 2 × Di2 Cable Plug Rubber Brake Line Stops

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Frequently Asked Questions

Q: What are Di2 cable plug rubber brake line stops used for on a bicycle?

A: These rubber plugs are designed to seal open cable routing holes on carbon and alloy bicycle frames. They keep out moisture, dust, and debris, prevent internal rattling, and give your frame a clean, finished appearance — especially important on Di2 electronic shifting builds where cable port management is key.

Q: Will these cable plugs fit my carbon road or gravel bike frame?

A: These plugs are made to fit standard cable routing port sizes found on most carbon and alloy road, gravel, and cyclocross frames. Each plug measures 3 × 1.5 cm (1.18 × 0.59 in). We recommend verifying your frame's port diameter before ordering to ensure the best fit.

Q: How many pieces are included in one order?

A: Each package includes 2 pieces, giving you enough to cover multiple cable ports on your frame or keep one as a spare.

Q: What materials are these brake line stops made from?

A: They are constructed from a flexible rubber/plastic composite that is durable, weather-resistant, and lightweight — ensuring a secure fit without adding measurable weight to your build.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.