How to Replace the Cable on Your SRAM Rival eTap AXS for Better Performance

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Replacing the shift cable might sound irrelevant when discussing the SRAM Rival eTap AXS [paid link], a fully wireless electronic drivetrain. However, the misunderstanding lies in what “cable replacement” actually refers to in this context. While there are no mechanical shift cables in this groupset, maintaining and occasionally replacing the brake cables or hydraulic hoses is an essential part of upkeep. Riders who use SRAM Rival eTap AXS [paid link] in its mechanical brake configuration will especially benefit from this guide.

This article breaks down how to replace brake cables or hydraulic hoses on the SRAM Rival eTap AXS [paid link] setup, optimizing brake performance and overall ride safety.

Tools Required

  • 5mm Allen key
  • T25 Torx wrench [paid link]
  • Torque wrench [paid link]
  • New brake cable or hydraulic hose (depending on setup)
  • SRAM PitStop DOT fluid (for hydraulic setups)
  • Brake bleed kit [paid link] (for hydraulic setups)
  • Cable cutters (for mechanical setups)
  • Olive and barb kit (for hydraulic hose installation)
  • Needle driver (hydraulic systems)
  • Internal cable routing tool (optional but helpful)

Understanding Brake Cable Types in SRAM Rival eTap AXS

SRAM Rival eTap AXS is available in two main configurations:

  • Rim brake variant: Uses traditional mechanical brake cables.
  • Hydraulic disc brake variant: Uses hydraulic hose systems.

This article focuses on both versions, with dedicated steps for each. It’s crucial to identify which system your bike uses before starting.

Preparation: Safe Setup and Component Access

Before replacing any brake cable or hose, ensure your bike is safely secured in a work stand. Remove both wheels for better access. Detach the bar tape and housing if the bike uses internally routed cables or hoses.

Ensure the battery on your Rival eTap AXS derailleur is removed and stored safely to prevent accidental actuation.

Cable Replacement for Mechanical Rim Brake Systems

If you’re using the Rival eTap AXS with rim brakes, follow these steps to replace the cable:

1. Disconnect the brake caliper.
Loosen the anchor bolt on the brake arm using a 5mm Allen key and slide out the brake cable.

2. Access the lever.
Peel back the lever hood. Locate the internal cable end within the Rival eTap AXS HRD shifter. Pull the lever and expose the cable head seated inside.

3. Remove the old cable.
Push the cable through the housing and out the lever body. Take note of any kinks or corrosion in the housing.

4. Inspect and replace the housing (if needed).
If the housing is frayed, corroded, or kinked, replace it along with the cable. Use a high-quality compressionless housing for improved brake feel.

5. Install the new cable.
Feed the new cable through the lever, down the housing, and out to the brake caliper. Use light lubrication inside the housing for smoother actuation.

6. Secure the cable and adjust tension.
Clamp the cable at the caliper using the anchor bolt. Squeeze the brake lever and fine-tune cable tension. Confirm pad centering and contact points.

7. Re-wrap the bars and test.
Reinstall the bar tape, check for lever firmness, and test the brakes thoroughly.

Hydraulic Hose Replacement for Rival eTap AXS Disc Brakes

For riders with hydraulic disc setups, this process requires more caution and specific tools:

1. Disconnect the caliper.
Using a T25 Torx, unbolt the caliper from the frame. Carefully remove the brake hose by unscrewing the compression nut.

2. Detach the lever side.
Peel back the hood and loosen the hydraulic fitting at the lever. Make sure to keep the lever upright to avoid air intake.

3. Route and cut the new hose.
Use the old hose as a template for length. Cut the new hose cleanly with hydraulic-specific cutters.

4. Install new fittings.
Insert the barb into the hose end using a needle driver. Slide on the olive and compression nut.

5. Connect the hose to lever and caliper.
Carefully thread the new hose into the lever first, then attach it to the caliper. Torque the fittings as per SRAM specs.

6. Bleed the brakes.
Use a SRAM bleed kit [paid link] and PitStop DOT fluid to remove all air from the system. Follow SRAM’s bleed protocol precisely to ensure safe operation.

7. Test and adjust.
Check brake lever firmness and rotor clearance. Spin the wheel and ensure there’s no rubbing or delayed lever response.

Signs Your Cable or Hose Needs Replacement

Replacing the brake cable or hose isn’t just about a periodic schedule—it’s based on performance cues:

  • Spongy lever feel (for hydraulics)
  • Friction in lever movement
  • Visible wear on outer housing
  • Corrosion near cable ends
  • Fluid leaks or air bubbles in hydraulic systems

If any of these symptoms arise, it’s time to inspect and replace the necessary parts.

Customization and Optimization Tips

  • Opt for compressionless housing for crisper braking.
  • Consider internal routing guides to ease cable or hose passage.
  • Always trim the hose to match your riding position—excess hose can cause delay and reduce responsiveness.
  • Use SRAM’s branded DOT fluid only; mixing fluids may damage seals.

Compatibility Notes for Rival eTap AXS Brake Cables

While the Rival eTap AXS drivetrain is wireless, brake cable and hose compatibility still matters:

  • Mechanical brake systems are compatible with standard SRAM road brake cables.
  • Hydraulic setups require DOT fluid-specific hoses—do not substitute with Shimano mineral oil [paid link]-compatible lines.
  • Avoid mixing components from different series (e.g., Force or Red) unless you confirm exact match specs.

FAQs

1. Does the SRAM Rival eTap AXS use shift cables?
No. Rival eTap AXS uses wireless electronic shifting, so there are no shift cables. This article covers brake cable and hose replacement.

2. How often should I replace hydraulic hoses?
Every 1–2 years depending on use, or if braking feels inconsistent, hoses appear damaged, or fluid contamination occurs.

3. Can I use third-party hydraulic fluid with Rival eTap AXS?
No. SRAM requires DOT 4 or DOT 5.1 [paid link] fluid—never use mineral oil [paid link].

4. What is the torque spec for brake hose fittings?
Generally, 5–7 Nm is the recommended torque for SRAM Rival eTap AXS hose connections.

5. Why is my brake lever still soft after bleeding?
There may still be air in the system. Re-bleed thoroughly, ensuring no bubbles remain in the lever or caliper.

6. Can I switch from mechanical to hydraulic brakes on Rival eTap AXS?
Yes, but it requires new levers, calipers, hoses, and possibly new frame routing if your current setup doesn’t support internal hoses.

Conclusion

Replacing the cable or hose on your SRAM Rival eTap AXS setup is vital to maintaining peak braking performance and rider safety. Whether you’re using a rim brake with mechanical cables or a disc brake with hydraulic hoses, staying on top of wear and routing conditions ensures your bike performs like new. With the right tools, attention to detail, and routine maintenance, you’ll extend the lifespan of your components and enjoy a more responsive ride.