Rotor FLOW INPower MAS Powermeter Crank Arm

The Rotor INpower Flow MAS power meter allows you to record your power readings via your ANT+ head unit. Inconspicuously integrated inside the crank axle, INpower is protected from shocks, crashes and outside contaminants plus it allows you to maintain your bike’s sleek, elegant aesthetics. The battery is also located within the bottom bracket spindle.


  • Power metrics are easily sent to your ANT+ device (head unit) so you can see your results
  • MAS (Micro Adjust Spider) technology offers more positions to suit every rider’s needs. The MAS spider when used with Q-Rings offers half positions giving approximately 2,5 degrees. Note; a standard crank in combination with the OCP of the Q-Rings, allows approximately 5 degrees of chainring adjustment
  • Integrated electronics (and battery) housed within the axle making for cleaner data transfer
  • INpower uses a standard AA battery that typically lasts 300 hours when fully charged
  • INpower cranks use UBB (universal bottom bracket) and are compatible with almost every bike frame on the market
  • INpower software features different modules to optimise your cycling performance
  • INpower is compatible with all Rotor 30mm cranks


  • Weight (110 BCD): 597g
  • Weight (130 BCD): 614g
  • Strain gauges: 4
  • Axle: 30mm (UBB (Universal Bottom Bracket))
  • Axle material: Aluminium
  • Battery: AA 1.5V (300 hours riding time)
  • Water resistance: IPX7
  • Wireless technology: ANT+ 2.4Ghz
  • Crankarm lengths available: 170mm, 172,5mm, 175mm


EMI is offered on Credit Cards from the following card issuing banks 
- American Express
- Axis Bank
- HDFC Bank
- ICICI Bank 
- IndusInd Bank
- Kotak Mahindra Bank
- RBL Bank
- Standard Chartered Bank
- Yes Bank
The option to select an EMI is available after you checkout and choose a card based payment mode.

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