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Upgrading a Rally 110 System

You can upgrade a single-sensing Rally™ 110 pedal power meter to a dual-sensing Rally 210 system by adding a Rally 110 upgrade spindle, to access advanced training data (Cycling Dynamics).

You can purchase a Rally 110 upgrade spindle from your Garmin® dealer, or you can go to garmin.com.

Turning On the New Spindle

The new spindle is packaged in travel mode to preserve battery life. You must briefly connect it to a power source to turn it on.

  1. Use the included charging adapter and USB-C® cable to connect the spindle to a power source.

    The status LED flashes Green while charging.

  2. Disconnect the spindle from the charging adapter.

    The status LED flashes Blue as the right spindle searches for a connection to the left spindle.

TIP: You should write down the seven-digit pairing code located on the new spindle, next to the charging contacts. You will need it later to pair the new spindle.

Installing the New Spindle

WARNING

You must tighten the spindle nut and cover according to the specified torque requirements. Too much or not enough torque may lead to product damage or serious personal injury or death.

NOTICE

You must apply grease to the new spindle according to the instructions below. Installing the new spindle without appropriate grease application causes product damage.

These instructions show the Rally RK pedal body. The steps are the same for any Rally 110 pedal body type.

  1. Use a 15 mm wrench to remove the right pedal from your bike.
  2. Using the wrench to hold the spindle steady, use a 5 mm hex key to remove the cover 1.
    NOTE: The cover on the right pedal has a left-handed (reverse) thread.

    Removing the outer door and the spindle nut with callouts
  3. Using the wrench to hold the spindle steady, use a 5 mm hex key to remove the spindle nut 2.
    NOTE: The spindle nut on the right pedal has a left-handed (reverse) thread.
  4. Remove the pedal body from the existing spindle.
  5. Wipe off all grease, and apply a thin layer of new grease to the roller bearing inside the pedal body.

    Greasing the roller bearing in the pedal body
  6. Apply a thin layer of grease to the highlighted areas of the new spindle.
    NOTE: You should apply enough grease to fill the groove on the rubber seal 3.

    Spindle with a callout
  7. Insert the new spindle into the pedal body and rotate it a few times to help distribute the grease.
  8. Use a 5 mm hex key to install the spindle nut and tighten it to 10 N-m (88 lbf-in.).
  9. Apply a thin layer of grease to the O-ring around the cover.

    Greasing the outboard door seal.
  10. Use a 5 mm hex key to install the cover and tighten it to 5 N-m (44 lbf-in.).
  11. Wipe off all excess grease.

Pairing the New Spindle Using the Garmin Connect App

  1. Rotate the cranks to wake up the pedals.
  2. On the Garmin Connect™ app, select Menu symbol > Garmin Devices > Rally 110/210 > System > Link Right Pedal.
  3. Enter the 7-digit pairing code found on the new spindle.

The status LED flashes Green on both spindles.

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August 2025
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