[caption id="attachment_61551" align="aligncenter" width="1024"] Old Image - Rally[/caption] Garmin Rally X10: new Power Pedals for 2025-2026, likely SOON! via: @JohnW, thank you! Today, I directly a new leak on an upgrade to Garmin's power meter pedal system, likely called RALLY X10. A few new featurettes are coming too, and I'm half-expecting to see the product on the shelves in August-September. (Talking with others, they have also heard different rumours, hence considerably bumping up the likelihood) Let's go... why Now? The existing Garmin RALLY RS200 (RS Series) is over four years old; it's falling behind in competitiveness. I wouldn't buy one today. Simply put, it's due for a refresh. Component technologies will have improved slightly over the years and become more accurate and power-efficient. Plus, Garmin will be aware of the limitations of the current product and be determined to overcome them. Garmin will have expected a new product from Favero - I have the Assioma PRO RS-2 (2025), and they are awesome. I couldn't ask for anything more in a reference-grade power meter pedal. I doubt any of Assioma's capabilities would have surprised Garmin, which will be looking to add something new and different to justify its longstanding premium pricing strategy. Furthermore, legislation and the needs of pro riders are driving sports electronics towards secure data connections. [sc name="scfaveroassiomaprors" ][/sc] sort-of Leaked New Features My source has mentioned all these features. Not being a cyclist, the source was a bit sketchy on some of these, so I've tried to fill some gaps without making stuff up. Secure Sensor connection We will get secure power meter connections aligned with similarly secure connections Garmin has already introduced for heart rate monitors like HRM 600. This is both leaked and expected. It's the way of the world, in that the powers seem to believe we want secure connections to non-personal data. #sigh. Direct Force Measurement The watts we see from our power meter pedals are: Power (Watts)=(Force (N)×Crank Length (mm)/1000)×(2π×Cadence (rpm)/60) Garmin will add new metrics that let us consider just the force part of the calculation. This is not new. I believe Pioneer, Rotor and Shimano have supported FORCE in some guise on earlier products. I wouldn't get too excited by it as it will be of limited use. There are some training protocols where you focus on producing force, which usually involve pedalling at a low cadence. Having FORCE as a new metric will help this kind of training. It's perhaps also interesting to understand the forces you are putting out in different kinds of riding. For example, I know that when out of the saddle, sprinting up relatively short hills, I am cycling with a lowish cadence (say 60rpm), where I can generate significantly more power than when seated. When in the saddle, I can't generate anywhere near as much power, but can physically spin faster (80-100rpm). I could do the math, I suppose. I could also try to close the gap that exists in the force from sitting and the force when standing. For reviewers, force might also be a better comparator when determining accuracy. Numerous power meters drop the occasional crank revolution. You've seen the calculation above, so you will understand that a missed revolution can significantly throw off the resulting watts, making comparison tricky with another product. When I look for a power difference, is it caused by whatever measures the cadence, the force, or both? Now I'll know more easily and with left and right force splits. https://the5krunner.com/2025/07/19/garmin-venu-4-first-leak/ speculated Features From the known leaks above, it follows that there will be other related features. I'll also add some glaring omissions by Garmin that its competitors offer, and where Garmin will probably want to play catch-up. Increased Data Rate Capture and Broadcast I don't want to delve too much into data measurement, processing and broadcasting frequency. Suffice it to say, I will be very surprised if we don't see the ability to receive higher resolution data. The storage limitation is that, AFAIK, a FIT file can only have 5 data points per second. We see that in RR/HRV data, and recently with the 5Hz position reporting for Edge MTB. The 5Hz limit will not be changed for FIT files; however, it might be possible to create a live stream differently, either through Bluetooth (? IDK) or directly to Garmin Connect or a 3rd party app. I believe Pioneer did that. In terms of what that means for me and regular readers of this site, the answer is "not a lot." You will probably get a more accurate power curve in the 1-3 second range. That's it. The averaging calculations performed on your bike computer or the power meter itself, around 5Hz data, only impact accuracy in that timeframe. https://the5krunner.com/2025/07/18/garmin-new-forerunner-on-22-july-tuesday/ Increased Accuracy Body Rocket and others have introduced power meters claiming accuracy (error) below 1%. Garmin's frequent data, perhaps a new generation of strain gauge, and some awesome tinkering from its engineers might be able to give us a more accurate power meter. This would mean nothing to most people in terms of true actionability. However, I'm pretty sure that lots of people are a sucker for claims of ''It's more accurate " and would buy Rally X10 as a result. (Yeah, me too!!) Battery I suspect Garmin will revert to rechargeable batteries. Plus, as is the way with these things, battery life will be even better than before. It will be interesting to see if Garmin can boost Rally from the 100-120 hours eked from the replaceable battery. Favero only managed 50-60 hours from the Li-ion rechargeable, so perhaps Garmin's battery life will drop to those kinds of levels. There is no magic battery tech that Favero was unaware of. Rectify common problems I steered well clear of Garmin's Rally pedals. Having been burned by the problems of the Vector predecessors, I trusted Favero instead. I seem to have made the right choice, as the following are known Rally issues that Garmin will likely be working to design around for the replacement model. Bearing wear after ~10,000–20,000 km, Non-owner-serviceable pedal bearings Pedal body wear requiring expensive replacements Left/right power imbalance reporting errors (meaning one or both pedals are wrong) Notable overreading or underreading power despite calibration Torque sensitivity during pedal install Misreporting of cadence data Temperature drift affecting power accuracy Calibration failures on Garmin devices Signal dropouts (ANT+/BLE) Firmware update failures Inconsistent wake/sleep behaviour LED indicators showing unknown states Incompatibility with certain third-party head units No auto-zero calibration [sc name="scmagenep715" ][/sc] Price: Value - a turning point? At $1,100, Garmin Rally RS200 overshadows the Assioma PRO RS's sub-$800 price point. Both starkly put into perspective by Magene'sP715 dual-sided pedals at $500 RS200 isn't worth $1,100. Yet Garmin will inevitably attempt to further raise the ante with the Rally X10...let's say $1,200 What do you think...$1200? or a more sensible $950 to counter the glaringly obvious threat from Assioma? [sc name="scfaveroassiomaprors" ][/sc]
