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ROTOR INpower DM MTB Power Meter

Josh Matthew June 29, 2022


ROTOR’s INpower MTB now with DM rings and Bluetooth SMART

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ROTOR INpower DM MTB Power Meter

The ROTOR INpower DM MTB Power Meter measures left leg power using two sets of opposing strain gauges in the axle. The strain gauges are able to measure power, cadence, torque effectiveness and pedal smoothness. Specifically designed for off road use, all of the electronics are located inside the water-proof, sealed axle. This makes the INpower DM MTB super durable and able to withstand the muddiest, harshest conditions.

However unlike the previous generation power meter, the new INpower DM MTB uses ROTOR’s Direct Mount Chainrings. The Direct Mount rings are machined from a solid block of 7075 aluminum which makes them lighter and stronger than the standard 2x chainring configuration. The ROTOR INpower DM MTB has ANT+ and Bluetooth SMART functionality, is powered by a AA battery with 300-hour battery life and features +/- 1.0% accuracy.

The ROTOR INpower DM MTB features ROTOR’s 30 mm UBB (Universal Bottom Bracket) design. This makes the power meter compatible with almost all standard frames when used with the correct spacers. In addition, when used with a Q-Ring, ROTOR’s OCP (Optimum Chainring Position) technology allows you to identify your OCP in order to fine-tune your Q-Rings for optimized pedaling performance and efficiency.



The ROTOR INpower DM MTB Power Meter is available in the following configurations:

Crank arm lengths: 165 mm | 170 mm | 175 mm

Chainring sizes: 30 | 32 | 34

Chainring shapes: Round | Q-Ring (Oval)

Please note – the ROTOR INpower DM MTB is only compatible with ROTOR Direct Mount MTB Chainrings.


Tools Needed for Installation

You will need the following tools for installation of this product. You can purchase many of these commonly used tools in our store.

  • 10 mm Allen key
  • 8 mm Allen key
  • ROTOR DM lockring tool (supplied)


Chainrings: The ROTOR INpower MTB is compatible with ROTOR Direct Mount MTB chainrings, which can be purchased on this page along with the power meter.

Bottom Bracket: This power meter fits 30 MM bottom brackets. If you currently have a 30 MM crankset on your bike, you should be able to re-use your existing bottom bracket. However, if you are chaining spindle sizes, you will need to replace your bottom bracket.

ROTOR INpower DM MTB Specs

NameINpower DM MTB Power Meter
Bike TypeMTB
Location of Power MeasurementAxle
Left or Both Legs MeasuredLeft
Independent Left/Right MeasurementNA
InstallationMore involved (60 min. estimated)
Chainring Configuration1X
Speeds9-, 10-, 11- and 12-speed
Chainline SpacingBoost
Crank Arm MaterialAluminum
Communication ProtocolANT+ and Bluetooth SMART
Claimed Accuracy+/- 1.0%
Active Temperature CompensationNo
Weight635 grams (170 mm, 34T)
Battery TypeAA
Battery Life300 hours
Method of Cadence MeasurementAccelerometer
Spindle Size30 mm
Q Factor169 mm boost
Warranty2 years

In the Box

  • ROTOR INpower DM MTB
  • DM Chainrings (if purchased)
  • USB cable for charging
  • Users manual

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