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ROTOR INpower FLOW Crankset

josh January 30, 2018
5.00 out of 5 based on 1 customer rating
(1 customer review)


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About the ROTOR INpower FLOW

The ROTOR INpower FLOW places its 4 strain gauges inside the axle (hence the name ‘INpower’). The INpower uses ROTOR’s 30mm UBB (Universal Bottom Bracket) design which allows ROTOR to use the same power meter with both their road and MTB cranks. Another advantage to the axle-based design is that it means the critical components of the power meter are safe from impact, dirt and water, plus it allows you to maintain your bike’s sleek, elegant aesthetics.

INpower’s TORQUE 360 and OCA pedal analysis allows you to define your pedal performance and apply it to Q-Rings to reach your full potential. The ROTOR INpower FLOW is powered by a AA battery and records your power readings via your ANT+ head unit.


ROTOR INpower FLOW Options

  • BCD: 110 MAS, 130 MAS
  • Crank Lengths: 170 mm, 172.5 mm, 175 mm
  • SRM PC8 Cycling Computer Bundle: Bundle with PC8 (you save $249 with the bundle)
  • Note – we also sell the SRM Shimano Dura-Ace 9000 power meter without chainrings for $1,930. Contact us if you are interested in this option



INpower is equipped with the UBB30 axle. UBB30 is a 30mm diameter axle which is compatible with almost all standard frames in the market (when used with the correct spacers). ROTOR INpower can be installed on your bike even if your current cranks are 24mm diameter.

Specifically, UBB30 is compatible with the following standards: BB30 (68/73mm), PF30 (68/73mm), BSA threaded, ITA threaded, BBright and BBright Direct Fit, BB86, BB386 EVO, BB89 and BB92.

The only frames not compatible with the UBB30 system are BB90 and BB95 (both for 24 mm diameter axle).



Power Meter TypeAxle / Bottom Bracket
Type: GaugeStrain
Number of strain gauges4
Weight597 grams (110 MAS, 170)
Crank Arm Lengths170, 172.5, 175mm
BCD Options110 MAS, 130 MAS
Battery TypeAA
Battery Life300 hours
Left/Right Power MeasurementNo
Communication ProtocolANT+
Claimed AccuracyNA
Q Factor148 mm

1 review for ROTOR INpower FLOW Crankset

  1. Rated 5 out of 5


    Power Meter City – nice to deal with. Friendly and super helpful. Shipping was quick.
    ROTOR FLOW – After looking at crank power meters for a while, I decided to go with ROTOR. I had heard good things about it. I’ve been using it for exactly 1 month. This thing is bomb-proof! I take good care of my bikes but I like knowing that my power meter isn’t sensitive to a bump or fall. So far it’s worked pretty much flawlessly. I also like the fact that I can run q-rings if I decide to make that step. The only thing it’s missing is individual power balance – but I’m still giving it a 5-star review because that’s not super important criteria for me.

    • Power Meter City

      Power Meter City

      William, thank you for your review – good info! Let us know if you have any questions or need any help getting the most out of your ROTOR.

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