Rotor FLOW INPower MAS Power Meter Crank

Item number: 44244
instead of 721.85€ 609.24€

excl. shipping cost
to the delivery destination: USA

black-silver/170.0 mm
in stock

Delivery to USA is not possible.

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Rotor FLOW INPower MAS Power Meter Crank - black-silver/175.0 mm
Rotor FLOW INPower MAS Power Meter Crank - black-silver/175.0 mm
  • 100 day return period
  • Online since 1998
  • Trusted Shop 4.83 / 5.00
An aerodynamically designed crank, ideal for use in triathlon and time trials as well as certain racing applications. With INPower power measurement - because inner values count.

Information regarding the return of batteries and electrical equipment:

Information on the return and disposal of used batteries, accumulators and electrical equipment can be found here.


Application: Triathlon, Road
Type: crankarm with performance measurement (left)
Compatibility: 2-speed
Chainring Mount: 130 mm bolt circle diameter, 5-arm

Technical Information:

Series: FLOW
Crankarm Material: aluminium (7055)
Axle Material: aluminium
Crankarm Length: 170.0 mm, 172.5 mm, 175.0 mm
Chainline: 43.5 mm
Q-Factor: 148 mm
Axle Diameter: 30 mm
Compatible BSA Shell Width: 68 mm
Recommended Bottom Bracket: BSA, BB386EVO, BB86, PF30*
Tolerance: +/- 0.5 %
Point of Measurement: crank axle
Power Source: 1 x AA mignon battery (1.5 V)
Battery Life: up to 300 h
Data Collected: power, cadence, torque (left), pedal stroke uniformity (left)
Waterproof: IPX7
Data Transfer: ANT+ 2.4 Ghz

* A complete overview of compatible bottom brackets and any necessary spacers can be found in the spacer chart by Rotor.


- MAS-Spider
- 100 % CNC-machined
- suitable for oval chainrings (must be ordered separately)
- compatible with 9-, 10- and 11-speed drivetrains
- power measurement electronics and battery integrated in the axle
- 4 strain gauges
- data transmission protected from dirt and shocks
- tool-free battery replacement
- low battery alert
- additional values via software: Torque 360, OCA (Optimum Chainring Angle)
- Software download on the Rotor homepage
- Analysis via
- regular firmware updates
- crank connects to PC via USB ANT+ stick (e.g. Rotor USB ANT+ dongle)
- installation requires 8 mm and 2 mm hex tool

Manufacturer's Warning: For INPower cranksets, only the crank bolt included in the scope of delivery may be used (also available as a spare part). The crank screw for cranks without INPower has a longer thread, which damages the electronics.

For information on system requirements and how to use Rotor software, please refer to the Rotor INPower User Manual.


Aluminium 7055
Rotor uses only the best materials to make the best cranks. 7055 combines the superior physical properties of a 7000 alloy with incredible wear resistance. Each bar of raw material is ultrasonically inspected to ensure that it is free from internal defects. Rotor uses 7055 in manufacturing the completely CNC-milled pedal cranks such as FLOW, 3D+ and REX 1.

Inner values count! The technology of the Rotor INPower is completely and securely positioned inside of the axle. The patented ROTOR INPower with integrated power measurement will improve your training in both quality and experience aspects. It is one of the lightest integrated power measuring cranks and is an ideal introduction to power-controlled training. Safe from shocks and debris, the placement of the strain gauges in the centre of the axle provides accurate and reliable data transmission. The measured data are recorded in the left crank arm. The left-hand crank is available as an upgrade kit for all rotor crank sets with 30 mm axle. The Optimal Chainring Angle (OCA) system allows you to find the ideal Optimal Chainring Position (OCP) setting for your Q-Ring by analysing the force within one pedal rotation. Data transmission is interference-free thanks to ANT+ technology. Replacing the standard AA battery can be carried out without tools.

UBB System
The Universal Bottom Bracket (UBB) system lets Rotor use both 24 mm and 30 mm axle diameters, making it compatible with almost all frames on the market.

Micro Adjust Spider (MAS)
" MAS" stands for Micro Adjust Spider, but it also means " more" in Spanish. That's what this technology is all about: more adjustment options to optimise your Q-Rings. Additional bolts facilitate intermediate positions between the existing optimal chainring positions (OCPs) on the Q-ring. A combination of standard crank and Q-ring allows for OCP adjustment in 5° increments. Together with Q-Rings, MAS offers intermediate positions in 2.5° steps for OCP adjustment. This allows you to fine-tune the position of your Q-rings according to your personal pedalling behaviour.

Manufacturer Part Numbers:

170.0 mm: C13-022-19010-001
172.5 mm: C13-022-20010-001
175.0 mm: C13-022-21010-001


- 1 x Rotor FLOW left crankarm, incl. Rotor INPower axle
- 1 x Rotor FLOW right crank arm, incl. MAS spider
- 1 x Rotor INPower crank bolt
- 1 x Rotor spacer
- incl. spacer for adaptation to BB30, PF30 and BBRight frames
- not incl. chainrings
- not incl. bottom bracket
- without USB ANT+ stick
- not incl. batteries


  • black-silver/170.0 mm: 614 g


in stock 2 to 7 days up to 10 days Out of stock inform me
  • black-silver/170.0 mm

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