Replacing cables on traditional mechanical groupsets is straightforward—but when it comes to SRAM’s RED eTap AXS [paid link], a wireless electronic drivetrain, there’s a unique nuance: the only “cables” involved are the electronic extension wires for Blips or Clics, used in time trial or triathlon setups. This guide walks you through replacing these Blip extension wires, ensuring precise performance and lasting reliability.
Understanding the Cable System on SRAM RED eTap AXS
SRAM RED eTap AXS [paid link] is a completely wireless drivetrain for both front and rear derailleurs. However, riders using remote shifting accessories like Blips (small buttons placed on handlebars) or Clics (aero bar-specific buttons) still rely on wires—specifically, BlipBox extensions.
These cables connect to the BlipBox, an ANT+ wireless controller mounted to the bike, typically on aero handlebars. Replacing them properly is essential to maintain a seamless shifting experience.
Tools Required
To replace Blip or Clic extension cables, you will need:
- 2mm hex wrench (for BlipBox mounting removal if necessary)
- Clean workspace with good lighting
- Compatible replacement Blip or Clic wires (available in various lengths)
- Isopropyl alcohol and microfiber cloth (for cleaning contact ports)
When to Replace RED eTap AXS Blip Extension Cables
Blip extension wires are durable, but several scenarios call for replacement:
- Physical damage to the cable sheath or internal wire
- Intermittent or failed shifting from Blips/Clics
- Desire to change wire length for a cleaner cockpit layout
- Swapping handlebars or extensions that require a new routing path
If you’re experiencing inconsistent shifting from remote buttons or planning a cockpit redesign, replacing these cables should be prioritized.
Removing the Existing Blip or Clic Wires
Start by turning off the BlipBox by pressing and holding its power button. Once the LED light turns off, disconnect any paired devices.
Gently remove bar tape or cable housing (if present) to access the Blip extension ports. Depending on the installation, you may need to unbolt the BlipBox from its mount using a 2mm hex wrench.
Locate the mini 3-pin connector where the Blip or Clic wires enter the BlipBox. Firmly but gently pull the connector straight out. Avoid twisting, as this can damage the internal pins.
Installing the New Blip or Clic Cables
Before inserting the new cable:
- Inspect the 3-pin connector for any debris.
- Lightly clean both the BlipBox port and new connector with isopropyl alcohol and a lint-free cloth.
Insert the new wire by aligning the three-pin connector correctly. The pins must match perfectly with the socket orientation; never force the connector.
Once inserted, gently tug to ensure a snug fit. Reroute the wire according to your handlebar setup. Secure with bar tape or heat shrink as needed.
Re-mount the BlipBox and power it back on.
Testing Your Replacement for Proper Functionality
After installation, verify that each button (Blip or Clic) triggers the correct shift. Use these steps to test:
- Press each Blip to observe derailleur movement.
- Confirm correct front and rear derailleur responses.
- Re-pair the BlipBox if necessary using the AXS mobile app.
If the derailleurs respond slowly or inconsistently, reseat the connector or test with a known working cable to isolate the problem.
Best Practices for Longevity
To extend the lifespan of your replacement cables:
- Avoid sharp bends or extreme cable tension
- Ensure no crimping occurs during handlebar wrapping
- Use manufacturer-specific cable lengths to reduce stress
Inspect connection points every few months, especially after heavy rain or race travel.
Common Issues After Replacing RED eTap AXS Cables
Some typical setup mistakes that can cause issues include:
- Improper connector orientation leading to no contact
- Loose connector causing intermittent shifting
- Overly long or short cables stressing the BlipBox ports
- Dirty or corroded connectors causing signal disruption
These can typically be resolved by cleaning, reseating, or using properly sized cables.
How Cable Replacement Improves RED eTap AXS Performance
Even though RED eTap [paid link] AXS is a wireless system, clean, secure wiring for Blips or Clics is essential in TT and triathlon setups. New cables:
- Ensure instant shift signal transmission
- Minimize risk of mid-race failure
- Create a cleaner, more aerodynamic cockpit
It also allows riders to fine-tune handlebar ergonomics by choosing different cable lengths and routing methods.
Conclusion
Replacing Blip or Clic cables on your RED eTap [paid link] AXS setup may not be part of a typical maintenance routine—but for riders using extensions, it’s critical for consistent performance. By following the correct procedure, inspecting for wear, and using appropriately sized cables, you’ll ensure clean shifts, better aerodynamics, and long-term system health.
FAQs: RED eTap AXS Cable Replacement
1. Can I use any 3-pin wire for my BlipBox?
No, only SRAM-approved Blip or Clic extension wires should be used to ensure proper connectivity and durability.
2. What cable lengths are available for RED eTap AXS Blips?
Lengths range from 150mm to 650mm. Choose the shortest cable that fits your cockpit layout without tension.
3. Do I need to update firmware after replacing cables?
Not typically. However, it’s a good time to check for updates via the AXS app for optimal performance.
4. Why won’t my new Blip cable work after installation?
Check connector alignment, clean ports, and ensure the cable is fully seated. If problems persist, test with a different cable.
5. Can I route Blip wires inside my handlebars?
Yes, many setups allow internal routing. Ensure the cable isn’t pinched or kinked during bar wrapping.
6. What signs indicate my current cable needs replacing?
Inconsistent shifts, physical wire damage, or setup changes that affect cable routing are all signs that replacement is necessary.