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Rotor INpower Powermeter MTB Direct Mount Crank Boost Cranks

Integration of power measurement technology at the core of the crankset design means the INpower DM ROAD powermeter provides precise and comprehensive data to improve your pedalling performance. Power is measured in the left leg through two sets of opposing gauges in the axle delivering precise data metrics including power output, cadence, torque effectiveness and pedal smoothness.

Watt measurement for your training: with the INpower Powermeter MTB Direct Mount crank from Rotor

Powered via standard AA battery that lasts up to 300 hours, all electronics are housed inside the sealed water-proof axle for centered rotational weight & maximum device protection. INpower DM Road is a powerful tool for measuring your unique pedaling biomechanics via our ROTOR Power application.

Access real time performance rich data including proprietary metrics TORQUE 360, Optimum Chainring Angle (OCA) and a recommendation of your Optimal Chainring Position (OCP). Combine this key information with Q RINGS® oval chainrings to adjust your OCP in 1 of 5 different positions for fine-tuned pedalling efficiency and maximise transmission of power in your unique pedal rotation.

Connect your INpower DM Road to your cycling device or smartphone via Bluetooth® or ANT+ and easily export your data to deep dive into your training analysis with various platforms such as TraingingPeaks.com Direct Mount technology includes a clever spline interface between the crank arm and chainrings for superior stiffness and direct transfer of your pedalling torque.

Product features – INpower Powermeter MTB Direct Mount Crank Boost

    • Use: MTB
    • Model: INpower MTB
    • Mounting: Direct Mount
    • Battery: AA 1.5V
    • Working time: 300 Hours
    • Wireless technology: ANT+™, Bluetooth® Smart
    • Axle: 30mm
    • Q-Faktor: 169mm (Boost)
    • Chain line: 52mm (Boost)
    • Measurement Type: Left only
    • OCA: Yes
    • Compatibility Bottom Bracket: BB30 / Pressfit 30 / BSA / BB89 / BB92

Crankarm Length (choose variant)

    • 165mm
    • 170mm
    • 175mm


    • 6082/7075 aluminum alloy


    • black


    • 544g / 170mm (Manufacturer information)


Computer Numerical Control (CNC) machining provides a precise and consistent manufacturing process. This is especially important when it comes to crafting bike components in order to ensure flawless funcionality with respect to all the parts working together. Equipped with the latest CNC resources, ROTOR parts are precisely machined to within a hundredth of a millimeter.

OCA stands for Optimum Chainring Angle and is one of the proprietary metrics offered by ROTOR INpower and 2INpower. OCA is closely linked to ROTOR Q rings, as it helps to find the proper chainring setup. OCA determines the angle in degrees, measured from the upper dead spot (with the cranks perpendicular to the floor) in which the effort barycenter (area enclosed by the torque/force curve) is shown in the TORQUE 360 graph.

Optimum Chainring Position (OCP) represents the different setup positions that ROTOR Q rings offer to fit a rider’s distinct pedaling style. Q rings feature up to 5 OCP´s, with OCP 3 as an intermediate starting point, all to optimize your pedaling style. You can determine your OCP if you know your Optimum Chainring Angle (OCA), which can be found by conducting a TORQUE 360 pedal analysis via ROTOR´s 2INpower and INpower User Software.

ROTOR´s CNC-machined cranks feature our Trinity Drilling System, which is a process that drills three full-depth holes along the axis of the crank. This allows us to remove excess material from the crank arm resulting in a lighter crank without compromising its exceptional stiffness-to-weight ratio.

Crank Arm Length


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