Garmin is on the fourth version of its popular power meter pedal, the Garmin Rally. The Rally comes in three versions: Rally RK, RS and XC. All three models feature a dual-sided version (200) and a single-sided version (100). With all versions, you get both a left and right pedal. However, the dual-sided versions have a power sensor in each pedal and can therefore measure both left and right leg power. The single-sided versions have a senor in just the left pedal and measures left leg power only. Garmin power meters feature an ultra-slim pedal body, Bluetooth SMART, easy set-up and Garmin’s Cycling Dynamics pedaling metrics.
When it comes to installation, it doesn’t get much easier. The Rally installs just like a normal pedal – no torque settings or special tools required. Installation can be done in a matter of minutes. This also allows them to be moved between bikes quickly and easily.
The Garmin Rally RS and RK power meters weigh 160 and 163 grams per pedal, respectively. This is within a few grams of many of the other popular pedal-based power meters. The Garmin Rally XC is built to withstand the rigors of off-road riding, so it’s understandable more robust. It weighs 222 grams per pedal.
As previously discussed, the dual-sided 200 versions measure both legs and also measures independent left/right leg power. The single-sided 100 versions measure left leg power and doubles it to approximate total power. This is how all single-side power meters work.
In addition to possessing all of the benefits of a pedal-based system (easy installation, compatible with all bikes, etc.), the Garmin power meters have a few unique features. It’s indeed the slimmest of all power meter pedals, much resembling a standard road pedal. In addition, it provides access to Garmin’s suite of advanced cycling dynamics data.
These power meters use LR44/SR44 (x4) or CR1/3N (x2) batteries. This battery is similar to, but not exactly the same, as the CR2032 battery used by other power meters. Battery life is up to 120, which we note is longer than any other pedal.
Like most power meters that are available today, Garmin power meters are compatible with both ANT+ and Bluetooth SMART devices. This allows you to use the power meter with virtually any headunit, including smart phones. It also allows them to easily pair with training apps like Zwift.
These units are accurate to within +/- 1.0%. This is on par (to slightly better) than the majority of other power meters on the market.
Like most power meters, the Garmin power meters use an accelerometer, housed inside the pedal body, to measure cadence. This ensures accurate cadence measurement. It also means you don’t have to worry about attaching a magnet to your frame.
Garmin power meters come with a two-year manufacturer’s warranty.