This listing is for a Rotor 2INpower DM dual sided power meter crankset with 170mm crank arms and a 52/36 chainring. It includes the original box, manual, paperwork, charger, spacers and also includes a Rotor bottom bracket for a BSA standard ($70 new). Other bottom brackets available from Rotor or other manufacturers. Please note that this crankset has a 30mm spindle. 

I have used this crank very little, probably less than 500 miles. In fact, I have used it so little that I have never needed to recharge it from its original charge. I purchased this crank new from Rotor and had it installed a bike last summer. I have since sold that bike and its components except for this crank. A picture of that bike is included in the listing as a reference. I thought that I would install this crank on a different bike, but I recently purchased a full bike that included a crank, so I no longer need this. When I used it, it was very responsive and accurate and easily linked up to my bike computer. 


Product Description

Knowing your strengths is helpful, but knowing your weaknesses is like mining for gold. If you can measure them, you can improve them. Our dual-sided, crank based power meter measures power individually in each leg to provide precise data about balance and power output in order to demonstrate where improvements can be made to pedaling performance, so you can harness the information and push yourself to the podium.

As the name suggests, 2INpower evolved from ROTOR's INpower, with the power meter tucked neatly inside the axle that measures power in the left leg. However, on the 2INpower, two additional sets of strain gauges haven been placed in the right crank arm, which offer precise measurements of power exclusively in the right leg, balancing out your drive and non-drive side with accurate readings so you can hone your power in both legs. These eight strain gauges might seem a touch excessive, as most leading power meters stop at five, but we find that the increased number reduces the chances of external conditions, like rapid changes in temperature, adversely affecting accuracy.  We opt to house the strain gauges tucked neatly in the crank axle, while electronics stay spindle-bound for protection against the elements

2INpower features both Bluetooth Smart, and ANT+ functionality, as well as a built-in rechargeable battery for easy charging between rides. 

  • Weight: 596g without chainrings
  • Head Unit: Bluetooth® Smart,  some ANT+™ head units: http://www.thisisant.com/directory
  • Analisys software: Trainingpeaks.com/ROTOR
  • Software: ROTOR 2INpower app, ROTOR 2INpower User Software
  • Q-Factor: 147.5 mm
  • Chain line: 43.5 mm
  • Sizes available: 165 / 170 / 172.5 / 175 mm
  • ROTOR Direct Mount chainrings, oval and round or 110x4 Spider
  • Battery Specifications: Rechargeable Li-ion + USB cable
  • Estimated Battery Life: 250 hours riding time
  • Water Resistance: IPX7
  • Strain Gauges: 4 gauges in the axle and 4 in the right crank arm
  • Wireless Technology: ANT+™ 2.4 Ghz/ Bluetooth® Smart