The SRAM Force eTap AXS D2 HRD [paid link] brake set is a technologically advanced hydraulic disc brake and shift system tailored for road cyclists who demand precision, adaptability, and wireless innovation. Engineered for seamless integration into the wider AXS ecosystem, this model offers significant upgrades in ergonomics, wireless communication, and brake control.
Tools Required
- 4mm and 5mm Allen wrenches [paid link]
- T25 Torx wrench
- Torque wrench with Nm scale
- DOT 4 hydraulic fluid
- Bleed kit compatible with SRAM brakes
- Clean rag and isopropyl alcohol
- SRAM eTap battery
- Digital device with AXS app
Installation Procedure
Installing the SRAM Force eTap AXS D2 HRD system requires careful setup to ensure both the hydraulic and electronic components function correctly. Begin by mounting the brake levers onto the handlebars using the 4mm Allen wrench, ensuring the clamps are torqued to 6-8Nm. The lever body is redesigned for better ergonomics and grip, so positioning can be slightly different compared to earlier generations.
For the hydraulic calipers, attach them using a T25 Torx wrench, aligning the calipers with the rotor to prevent brake rub. Ensure that all hose connections are secure and torqued to specifications. Use the included bleed blocks during this stage to maintain pad spacing.
The eTap AXS D2 shifters connect wirelessly to the derailleurs. Pair them using the AXS app or manual pairing mode by pressing the AXS buttons on each component. Attach the eTap batteries and ensure each unit is securely locked into place.
Adjustment and Fine-Tuning
Brake modulation and shift feedback have been improved in the D2 iteration. Lever reach can be adjusted via a 2.5mm Allen key on the inside of the lever body. This is critical for riders with smaller hands or specific reach preferences. Pad contact adjustment has been enhanced, allowing riders to tailor braking feel more precisely through the contact point adjustment screw near the reservoir.
Shift logic can be configured through the AXS app, allowing riders to choose between standard, sequential, or compensating shift modes. Firmware updates can also be managed within the app, ensuring the latest performance improvements are installed.
Maintenance Guidelines
Routine maintenance of the Force eTap AXS D2 HRD system involves both hydraulic and electronic aspects. For the hydraulic brake system, a full bleed should be performed every 6-12 months, depending on riding conditions. Use only SRAM-approved DOT 4 brake fluid and ensure all seals and hose fittings are inspected for leaks.
Brake pads should be checked for wear and contamination. SRAM recommends replacing pads when material thickness is below 1mm. Clean the rotors regularly with isopropyl alcohol to prevent glazing and maintain braking efficiency.
Battery maintenance is simple—charge the eTap batteries using the included charger. A full charge typically provides 60 hours of ride time. Always store batteries in a cool, dry environment and avoid overcharging.
Troubleshooting Common Set-Up Issues
One of the most frequent issues encountered during installation is rotor rub. This is usually due to caliper misalignment or a bent rotor. Realign the caliper using the centering technique—loosen the bolts, squeeze the brake lever, and re-tighten.
Inconsistent lever feel may indicate air in the brake lines, necessitating a full bleed. Spongy braking is typically a sign of moisture in the system, which also requires a fluid flush.
For shifting concerns, ensure all components are paired and the batteries are fully charged. Dropouts in wireless communication can often be resolved by updating firmware or repositioning components to reduce interference.
Customization and Performance Optimization
The Force eTap AXS D2 HRD allows for extensive customization. Riders can reassign button functions through the AXS app, such as swapping left/right shift functions or enabling sequential shifting for triathlon setups.
The system integrates seamlessly with power meters and other AXS-compatible components, offering a unified ecosystem that enhances performance monitoring. For those seeking even faster actuation, pairing with the latest SRAM Red AXS chain and cassette can offer smoother transitions under load.
Lever feel and braking power can be fine-tuned by experimenting with different pad compounds and rotor sizes, such as upgrading from 160mm to 180mm rotors for more aggressive descending.
Comparison with Similar SRAM Models
When compared to the SRAM Red eTap AXS HRD [paid link], the Force eTap AXS D2 HRD delivers nearly identical functionality at a lower price point. The key differences lie in material composition—Force uses forged aluminum rather than carbon—and weight, with Force being marginally heavier.
Compared to the Rival eTap AXS HRD [paid link], Force offers better ergonomics, improved pad contact adjustment, and compatibility with more advanced AXS components, making it a superior mid-tier option for serious riders.
Compatibility with Drivetrain Components
The Force eTap AXS D2 HRD brake set is fully compatible with all 12-speed SRAM AXS road derailleurs, cassettes, and cranksets. It is also compatible with SRAM’s Flattop chain design and DUB bottom brackets.
The brake calipers mount using flat-mount standards, making them suitable for most modern road and gravel frames. Hose routing and length can be adapted to aero [paid link] frame designs using SRAM’s comprehensive hose kits.
Battery and firmware compatibility are maintained across the entire AXS product line, which allows for hybrid setups involving Red, Force, and Rival components without performance degradation.
Frequently Asked Questions (FAQs)
1. How often should I bleed the Force eTap AXS D2 HRD brakes?
For optimal performance, a full hydraulic bleed is recommended every 6 to 12 months, depending on riding conditions.
2. Can I use Force eTap AXS D2 HRD with SRAM Red derailleurs?
Yes, Force levers and brakes are fully compatible with SRAM Red eTap AXS derailleurs due to the shared AXS platform.
3. Is the braking power different from the previous Force model?
Yes, the D2 version features improved modulation and a refined lever body for better control and comfort during braking.
4. Can I adjust how the levers shift gears?
Yes, the AXS app allows you to customize shift logic, including swapping buttons or enabling sequential shifting modes.
5. What type of fluid does the Force eTap AXS D2 HRD system use?
This model uses DOT 4 fluid. Using other types of fluid may damage seals and reduce performance.
6. Do I need to update firmware for optimal performance?
Yes, regular firmware updates via the AXS app are recommended to ensure system stability and access to new features.
Conclusion
The SRAM Force eTap AXS D2 HRD brake set is a premium braking and shifting solution offering significant ergonomic improvements, customizable performance, and seamless wireless integration. Its compatibility within the AXS system and strong hydraulic performance make it a compelling choice for riders who prioritize control, comfort, and adaptability on the road.